21022111400124 has 24 divisors (see below), whose sum is σ = 51633256071040. Its totient is φ = 6638561494704.

The previous prime is 21022111400077. The next prime is 21022111400179. The reversal of 21022111400124 is 42100411122012.

It is a self number, because there is not a number n which added to its sum of digits gives 21022111400124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46101121264 + ... + 46101121719.

Almost surely, 2^{21022111400124} is an apocalyptic number.

It is an amenable number.

21022111400124 is an abundant number, since it is smaller than the sum of its proper divisors (30611144670916).

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

21022111400124 is a wasteful number, since it uses less digits than its factorization.

21022111400124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92202243009 (or 92202243007 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 21022111400124 its reverse (42100411122012), we get a palindrome (63122522522136).

The spelling of 21022111400124 in words is "twenty-one trillion, twenty-two billion, one hundred eleven million, four hundred thousand, one hundred twenty-four".