22121202022212 has 24 divisors (see below), whose sum is σ = 51634645171200. Its totient is φ = 7371090133216.

The previous prime is 22121202022207. The next prime is 22121202022229. The reversal of 22121202022212 is 21222020212122.

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, 330449412 + ... + 330516347.

It is an arithmetic number, because the mean of its divisors is an integer number (2151443548800).

Almost surely, 2^{22121202022212} is an apocalyptic number.

It is an amenable number.

22121202022212 is an abundant number, since it is smaller than the sum of its proper divisors (29513443148988).

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

22121202022212 is a wasteful number, since it uses less digits than its factorization.

22121202022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660968555 (or 660968553 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22121202022212 its reverse (21222020212122), we get a palindrome (43343222234334).

The spelling of 22121202022212 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred two million, twenty-two thousand, two hundred twelve".