21037474012 has 24 divisors (see below), whose sum is σ = 37020122496. Its totient is φ = 10460447088.

The previous prime is 21037473997. The next prime is 21037474033. The reversal of 21037474012 is 21047473012.

It is a super-2 number, since 2×21037474012² (a number of 21 digits) contains 22 as substring.

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, 550923 + ... + 587869.

It is an arithmetic number, because the mean of its divisors is an integer number (1542505104).

Almost surely, 2^21037474012 is an apocalyptic number.

It is an amenable number.

21037474012 is a deficient number, since it is larger than the sum of its proper divisors (15982648484).

21037474012 is a wasteful number, since it uses less digits than its factorization.

21037474012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37737 (or 37735 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The spelling of 21037474012 in words is "twenty-one billion, thirty-seven million, four hundred seventy-four thousand, twelve".