202111221020212 has 24 divisors (see below), whose sum is σ = 404458967848320. Its totient is φ = 86568410621280.

The previous prime is 202111221020087. The next prime is 202111221020221. The reversal of 202111221020212 is 212020122111202.

It is a super-2 number, since 2×202111221020212² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202111221020212.

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, 2111788864 + ... + 2111884567.

It is an arithmetic number, because the mean of its divisors is an integer number (16852456993680).

Almost surely, 2^{202111221020212} is an apocalyptic number.

It is an amenable number.

202111221020212 is an abundant number, since it is smaller than the sum of its proper divisors (202347746828108).

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

202111221020212 is a wasteful number, since it uses less digits than its factorization.

202111221020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4223675151 (or 4223675149 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 202111221020212 its reverse (212020122111202), we get a palindrome (414131343131414).

The spelling of 202111221020212 in words is "two hundred two trillion, one hundred eleven billion, two hundred twenty-one million, twenty thousand, two hundred twelve".