Total tapas (austerities) in Jainism: 12

Six external (bahya tapas):

• Anashana: fasting
• Unodari: eating less than hunger
• Vritti-sankshepa: limiting kinds/quantity/place/time of food
• Rasaparityaga: renouncing tasty flavors
• Kayaklesha: willingly bearing bodily hardship for purity
• Sanlinata (Sallinata): seclusion and restraint of the senses/posture

Six internal (abhyantara tapas):

• Prayaśchitta: repentance and atonement
• Vinaya: humility and reverence
• Vaiyāvṛttya: selfless service to ascetics and the needy
• Svādhyāya: scriptural study
• Vyutsarga (Kayotsarga): letting go of attachment to the body
• Dhyāna: right meditation on the soul

Note: Both Śvetāmbara and Digambara traditions accept these twelve; only minor wording/ordering varies, not the essence.