13123210020985 has 32 divisors (see below), whose sum is σ = 16205306106528. Its totient is φ = 10197575731200.

The previous prime is 13123210020971. The next prime is 13123210021001. The reversal of 13123210020985 is 58902001232131.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 1440103201849 + 11683106819136 = 1200043^2 + 3418056^2 .

It is not a de Polignac number, because 13123210020985 - 2⁷ = 13123210020857 is a prime.

It is a super-2 number, since 2×13123210020985² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 592378669 + ... + 592400821.

It is an arithmetic number, because the mean of its divisors is an integer number (506415815829).

Almost surely, 2^{13123210020985} is an apocalyptic number.

It is an amenable number.

13123210020985 is a deficient number, since it is larger than the sum of its proper divisors (3082096085543).

13123210020985 is a wasteful number, since it uses less digits than its factorization.

13123210020985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44445.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 13123210020985 in words is "thirteen trillion, one hundred twenty-three billion, two hundred ten million, twenty thousand, nine hundred eighty-five".