21313111203012 has 24 divisors (see below), whose sum is σ = 49749128324896. Its totient is φ = 7101722469888.

The previous prime is 21313111202953. The next prime is 21313111203023. The reversal of 21313111203012 is 21030211131312.

It is a self number, because there is not a number n which added to its sum of digits gives 21313111203012.

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, 330957853 + ... + 331022244.

Almost surely, 2^{21313111203012} is an apocalyptic number.

It is an amenable number.

21313111203012 is an abundant number, since it is smaller than the sum of its proper divisors (28436017121884).

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

21313111203012 is a wasteful number, since it uses less digits than its factorization.

21313111203012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661982787 (or 661982785 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21313111203012 its reverse (21030211131312), we get a palindrome (42343322334324).

The spelling of 21313111203012 in words is "twenty-one trillion, three hundred thirteen billion, one hundred eleven million, two hundred three thousand, twelve".