21024750012 has 48 divisors (see below), whose sum is σ = 56157599232. Its totient is φ = 5997257280.

The previous prime is 21024749989. The next prime is 21024750023. The reversal of 21024750012 is 21005742012.

It is a super-2 number, since 2×21024750012² (a number of 21 digits) contains 22 as substring.

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, 152664 + ... + 255647.

It is an arithmetic number, because the mean of its divisors is an integer number (1169949984).

Almost surely, 2^21024750012 is an apocalyptic number.

It is an amenable number.

21024750012 is an abundant number, since it is smaller than the sum of its proper divisors (35132849220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21024750012 is a wasteful number, since it uses less digits than its factorization.

21024750012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408938 (or 408936 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The spelling of 21024750012 in words is "twenty-one billion, twenty-four million, seven hundred fifty thousand, twelve".