22122220120002 has 20 divisors (see below), whose sum is σ = 49570159898886. Its totient is φ = 7374073373280.

The previous prime is 22122220119931. The next prime is 22122220120067. The reversal of 22122220120002 is 20002102222122.

22122220120002 is a `hidden beast` number, since 221 + 22 + 220 + 1 + 200 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21862740929121 + 259479190881 = 4675761^2 + 509391^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 68278456999 + ... + 68278457322.

Almost surely, 2^{22122220120002} is an apocalyptic number.

22122220120002 is an abundant number, since it is smaller than the sum of its proper divisors (27447939778884).

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

22122220120002 is a wasteful number, since it uses less digits than its factorization.

22122220120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136556914335 (or 136556914326 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22122220120002 its reverse (20002102222122), we get a palindrome (42124322342124).

The spelling of 22122220120002 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twenty million, one hundred twenty thousand, two".