21014126630 has 32 divisors (see below), whose sum is σ = 43327595520. Its totient is φ = 7188420960.

The previous prime is 21014126591. The next prime is 21014126647. The reversal of 21014126630 is 3662141012.

It is a self number, because there is not a number n which added to its sum of digits gives 21014126630.

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, 311186 + ... + 372645.

It is an arithmetic number, because the mean of its divisors is an integer number (1353987360).

Almost surely, 2^21014126630 is an apocalyptic number.

21014126630 is an abundant number, since it is smaller than the sum of its proper divisors (22313468890).

21014126630 is a wasteful number, since it uses less digits than its factorization.

21014126630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684284.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 21014126630 its reverse (3662141012), we get a palindrome (24676267642).

The spelling of 21014126630 in words is "twenty-one billion, fourteen million, one hundred twenty-six thousand, six hundred thirty".