21023264126 has 16 divisors (see below), whose sum is σ = 32909095584. Its totient is φ = 10053652224.

The previous prime is 21023264113. The next prime is 21023264161. The reversal of 21023264126 is 62146232012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 827306 + ... + 852338.

It is an arithmetic number, because the mean of its divisors is an integer number (2056818474).

Almost surely, 2^21023264126 is an apocalyptic number.

21023264126 is a deficient number, since it is larger than the sum of its proper divisors (11885831458).

21023264126 is a wasteful number, since it uses less digits than its factorization.

21023264126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43315.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 21023264126 its reverse (62146232012), we get a palindrome (83169496138).

The spelling of 21023264126 in words is "twenty-one billion, twenty-three million, two hundred sixty-four thousand, one hundred twenty-six".