12021112112212 has 24 divisors (see below), whose sum is σ = 24096990135680. Its totient is φ = 5140169638560.

The previous prime is 12021112112197. The next prime is 12021112112227. The reversal of 12021112112212 is 21221121112021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12021112112197) and next prime (12021112112227).

It is a self number, because there is not a number n which added to its sum of digits gives 12021112112212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488968839 + ... + 488993422.

Almost surely, 2^{12021112112212} is an apocalyptic number.

It is an amenable number.

12021112112212 is an abundant number, since it is smaller than the sum of its proper divisors (12075878023468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12021112112212 is a wasteful number, since it uses less digits than its factorization.

12021112112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977962711 (or 977962709 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12021112112212 its reverse (21221121112021), we get a palindrome (33242233224233).

The spelling of 12021112112212 in words is "twelve trillion, twenty-one billion, one hundred twelve million, one hundred twelve thousand, two hundred twelve".