22012122011212 has 24 divisors (see below), whose sum is σ = 38700347433552. Its totient is φ = 10954972526400.

The previous prime is 22012122011207. The next prime is 22012122011213. The reversal of 22012122011212 is 21211022121022.

It is a self number, because there is not a number n which added to its sum of digits gives 22012122011212.

It is not an unprimeable number, because it can be changed into a prime (22012122011213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10628839 + ... + 12529822.

It is an arithmetic number, because the mean of its divisors is an integer number (1612514476398).

Almost surely, 2^{22012122011212} is an apocalyptic number.

It is an amenable number.

22012122011212 is a deficient number, since it is larger than the sum of its proper divisors (16688225422340).

22012122011212 is a wasteful number, since it uses less digits than its factorization.

22012122011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23159769 (or 23159767 counting only the distinct ones).

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

Adding to 22012122011212 its reverse (21211022121022), we get a palindrome (43223144132234).

The spelling of 22012122011212 in words is "twenty-two trillion, twelve billion, one hundred twenty-two million, eleven thousand, two hundred twelve".