22121162646 has 24 divisors (see below), whose sum is σ = 48629995512. Its totient is φ = 6703382400.

The previous prime is 22121162629. The next prime is 22121162653. The reversal of 22121162646 is 64626112122.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15234235 + ... + 15235686.

It is an arithmetic number, because the mean of its divisors is an integer number (2026249813).

Almost surely, 2^22121162646 is an apocalyptic number.

22121162646 is an abundant number, since it is smaller than the sum of its proper divisors (26508832866).

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

22121162646 is a wasteful number, since it uses less digits than its factorization.

22121162646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30469948 (or 30469937 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

Adding to 22121162646 its reverse (64626112122), we get a palindrome (86747274768).

The spelling of 22121162646 in words is "twenty-two billion, one hundred twenty-one million, one hundred sixty-two thousand, six hundred forty-six".