22121002200222 has 32 divisors (see below), whose sum is σ = 50852878624800. Its totient is φ = 7119403006464.

The previous prime is 22121002200169. The next prime is 22121002200277. The reversal of 22121002200222 is 22200220012122.

22121002200222 is a `hidden beast` number, since 2 + 212 + 10 + 0 + 220 + 0 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 22121002200195 and 22121002200204.

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, 7062898243 + ... + 7062901374.

It is an arithmetic number, because the mean of its divisors is an integer number (1589152457025).

Almost surely, 2^{22121002200222} is an apocalyptic number.

22121002200222 is an abundant number, since it is smaller than the sum of its proper divisors (28731876424578).

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

22121002200222 is a wasteful number, since it uses less digits than its factorization.

22121002200222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14125799657 (or 14125799651 counting only the distinct ones).

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

Adding to 22121002200222 its reverse (22200220012122), we get a palindrome (44321222212344).

The spelling of 22121002200222 in words is "twenty-two trillion, one hundred twenty-one billion, two million, two hundred thousand, two hundred twenty-two".