202111212112212 has 48 divisors (see below), whose sum is σ = 510706457835840. Its totient is φ = 61840645897728.

The previous prime is 202111212112211. The next prime is 202111212112231. The reversal of 202111212112212 is 212211212111202.

It is a super-2 number, since 2×202111212112212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202111212112211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3618923733 + ... + 3618979580.

It is an arithmetic number, because the mean of its divisors is an integer number (10639717871580).

Almost surely, 2^{202111212112212} is an apocalyptic number.

It is an amenable number.

202111212112212 is an abundant number, since it is smaller than the sum of its proper divisors (308595245723628).

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

202111212112212 is a wasteful number, since it uses less digits than its factorization.

202111212112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7237903512 (or 7237903510 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 202111212112212 its reverse (212211212111202), we get a palindrome (414322424223414).

The spelling of 202111212112212 in words is "two hundred two trillion, one hundred eleven billion, two hundred twelve million, one hundred twelve thousand, two hundred twelve".