21012312410 has 16 divisors (see below), whose sum is σ = 38048645376. Its totient is φ = 8354595408.

The previous prime is 21012312407. The next prime is 21012312421. The reversal of 21012312410 is 1421321012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6289442 + ... + 6292781.

It is an arithmetic number, because the mean of its divisors is an integer number (2378040336).

Almost surely, 2^21012312410 is an apocalyptic number.

21012312410 is a deficient number, since it is larger than the sum of its proper divisors (17036332966).

21012312410 is a wasteful number, since it uses less digits than its factorization.

21012312410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12582397.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21012312410 its reverse (1421321012), we get a palindrome (22433633422).

The spelling of 21012312410 in words is "twenty-one billion, twelve million, three hundred twelve thousand, four hundred ten".