202121110212 has 48 divisors (see below), whose sum is σ = 539027879040. Its totient is φ = 57744790272.

The previous prime is 202121110181. The next prime is 202121110237. The reversal of 202121110212 is 212011121202.

It is a junction number, because it is equal to n+sod(n) for n = 202121110191 and 202121110200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1224114 + ... + 1379382.

It is an arithmetic number, because the mean of its divisors is an integer number (11229747480).

Almost surely, 2^202121110212 is an apocalyptic number.

It is an amenable number.

202121110212 is an abundant number, since it is smaller than the sum of its proper divisors (336906768828).

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

202121110212 is a wasteful number, since it uses less digits than its factorization.

202121110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170780 (or 170778 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 202121110212 its reverse (212011121202), we get a palindrome (414132231414).

The spelling of 202121110212 in words is "two hundred two billion, one hundred twenty-one million, one hundred ten thousand, two hundred twelve".