21112874937 has 96 divisors (see below), whose sum is σ = 39538437120. Its totient is φ = 10937488320.

The previous prime is 21112874897. The next prime is 21112874947. The reversal of 21112874937 is 73947821112.

It is not a de Polignac number, because 21112874937 - 2⁶ = 21112874873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21112874892 and 21112874901.

It is not an unprimeable number, because it can be changed into a prime (21112874947) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7838563 + ... + 7841255.

It is an arithmetic number, because the mean of its divisors is an integer number (411858720).

Almost surely, 2^21112874937 is an apocalyptic number.

21112874937 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

21112874937 is a deficient number, since it is larger than the sum of its proper divisors (18425562183).

21112874937 is a wasteful number, since it uses less digits than its factorization.

21112874937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3145 (or 3133 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The spelling of 21112874937 in words is "twenty-one billion, one hundred twelve million, eight hundred seventy-four thousand, nine hundred thirty-seven".