202111111102212 has 36 divisors (see below), whose sum is σ = 550191358001740. Its totient is φ = 62188034185152.

The previous prime is 202111111102193. The next prime is 202111111102259. The reversal of 202111111102212 is 212201111111202.

It is a happy number.

202111111102212 is a `hidden beast` number, since 20 + 211 + 111 + 110 + 2 + 212 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14241762678276 + 187869348423936 = 3773826^2 + 13706544^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×202111111102212² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215930673787 + ... + 215930674722.

Almost surely, 2^{202111111102212} is an apocalyptic number.

It is an amenable number.

202111111102212 is an abundant number, since it is smaller than the sum of its proper divisors (348080246899528).

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

202111111102212 is a wasteful number, since it uses less digits than its factorization.

202111111102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431861348532 (or 431861348527 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 202111111102212 its reverse (212201111111202), we get a palindrome (414312222213414).

The spelling of 202111111102212 in words is "two hundred two trillion, one hundred eleven billion, one hundred eleven million, one hundred two thousand, two hundred twelve".