21314129884 has 24 divisors (see below), whose sum is σ = 38939947200. Its totient is φ = 10195174080.

The previous prime is 21314129869. The next prime is 21314129929. The reversal of 21314129884 is 48892141312.

It is a self number, because there is not a number n which added to its sum of digits gives 21314129884.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 830212 + ... + 855499.

It is an arithmetic number, because the mean of its divisors is an integer number (1622497800).

Almost surely, 2^21314129884 is an apocalyptic number.

It is an amenable number.

21314129884 is a deficient number, since it is larger than the sum of its proper divisors (17625817316).

21314129884 is a wasteful number, since it uses less digits than its factorization.

21314129884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685853 (or 1685851 counting only the distinct ones).

The product of its digits is 110592, while the sum is 43.

The spelling of 21314129884 in words is "twenty-one billion, three hundred fourteen million, one hundred twenty-nine thousand, eight hundred eighty-four".