202112021211212 has 24 divisors (see below), whose sum is σ = 404345686918656. Its totient is φ = 86593370984208.

The previous prime is 202112021211209. The next prime is 202112021211223. The reversal of 202112021211212 is 212112120211202.

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, 1086016868 + ... + 1086202955.

It is an arithmetic number, because the mean of its divisors is an integer number (16847736954944).

Almost surely, 2^{202112021211212} is an apocalyptic number.

It is an amenable number.

202112021211212 is an abundant number, since it is smaller than the sum of its proper divisors (202233665707444).

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

202112021211212 is a wasteful number, since it uses less digits than its factorization.

202112021211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172223157 (or 2172223155 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 202112021211212 its reverse (212112120211202), we get a palindrome (414224141422414).

The spelling of 202112021211212 in words is "two hundred two trillion, one hundred twelve billion, twenty-one million, two hundred eleven thousand, two hundred twelve".