22021120011212 has 24 divisors (see below), whose sum is σ = 44045265509280. Its totient is φ = 9436974543360.

The previous prime is 22021120011179. The next prime is 22021120011287. The reversal of 22021120011212 is 21211002112022.

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, 26598287 + ... + 27413702.

It is an arithmetic number, because the mean of its divisors is an integer number (1835219396220).

Almost surely, 2^{22021120011212} is an apocalyptic number.

It is an amenable number.

22021120011212 is an abundant number, since it is smaller than the sum of its proper divisors (22024145498068).

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

22021120011212 is a wasteful number, since it uses less digits than its factorization.

22021120011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54026561 (or 54026559 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22021120011212 its reverse (21211002112022), we get a palindrome (43232122123234).

The spelling of 22021120011212 in words is "twenty-two trillion, twenty-one billion, one hundred twenty million, eleven thousand, two hundred twelve".