22122210222012 has 48 divisors (see below), whose sum is σ = 54600618965760. Its totient is φ = 6956835608448.

The previous prime is 22122210221959. The next prime is 22122210222023. The reversal of 22122210222012 is 21022201222122.

It is a self number, because there is not a number n which added to its sum of digits gives 22122210222012.

It is a congruent number.

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, 548972562 + ... + 549012857.

It is an arithmetic number, because the mean of its divisors is an integer number (1137512895120).

Almost surely, 2^{22122210222012} is an apocalyptic number.

It is an amenable number.

22122210222012 is an abundant number, since it is smaller than the sum of its proper divisors (32478408743748).

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

22122210222012 is a wasteful number, since it uses less digits than its factorization.

22122210222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097985522 (or 1097985520 counting only the distinct ones).

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

Adding to 22122210222012 its reverse (21022201222122), we get a palindrome (43144411444134).

The spelling of 22122210222012 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred ten million, two hundred twenty-two thousand, twelve".