21413300124 has 24 divisors (see below), whose sum is σ = 52594071040. Its totient is φ = 6762094704.

The previous prime is 21413300123. The next prime is 21413300149. The reversal of 21413300124 is 42100331412.

It is a self number, because there is not a number n which added to its sum of digits gives 21413300124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21413300123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46958764 + ... + 46959219.

Almost surely, 2^21413300124 is an apocalyptic number.

It is an amenable number.

21413300124 is an abundant number, since it is smaller than the sum of its proper divisors (31180770916).

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

21413300124 is a wasteful number, since it uses less digits than its factorization.

21413300124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93918009 (or 93918007 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21413300124 its reverse (42100331412), we get a palindrome (63513631536).

The spelling of 21413300124 in words is "twenty-one billion, four hundred thirteen million, three hundred thousand, one hundred twenty-four".