21313004240012 has 24 divisors (see below), whose sum is σ = 37759647043104. Its totient is φ = 10524984832512.

The previous prime is 21313004240009. The next prime is 21313004240027. The reversal of 21313004240012 is 21004240031312.

It is a self number, because there is not a number n which added to its sum of digits gives 21313004240012.

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, 56207783 + ... + 56585694.

It is an arithmetic number, because the mean of its divisors is an integer number (1573318626796).

Almost surely, 2^{21313004240012} is an apocalyptic number.

It is an amenable number.

21313004240012 is a deficient number, since it is larger than the sum of its proper divisors (16446642803092).

21313004240012 is a wasteful number, since it uses less digits than its factorization.

21313004240012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112794065 (or 112794063 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21313004240012 its reverse (21004240031312), we get a palindrome (42317244271324).

The spelling of 21313004240012 in words is "twenty-one trillion, three hundred thirteen billion, four million, two hundred forty thousand, twelve".