1310113021220 has 12 divisors (see below), whose sum is σ = 2751237344604. Its totient is φ = 524045208480.

The previous prime is 1310113021211. The next prime is 1310113021237. The reversal of 1310113021220 is 221203110131.

It can be written as a sum of positive squares in 2 ways, for example, as 889939409956 + 420173611264 = 943366^2 + 648208^2 .

It is a super-2 number, since 2×1310113021220² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32752825511 + ... + 32752825550.

It is an arithmetic number, because the mean of its divisors is an integer number (229269778717).

Almost surely, 2^{1310113021220} is an apocalyptic number.

1310113021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310113021220 is an abundant number, since it is smaller than the sum of its proper divisors (1441124323384).

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

1310113021220 is a wasteful number, since it uses less digits than its factorization.

1310113021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65505651070 (or 65505651068 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1310113021220 its reverse (221203110131), we get a palindrome (1531316131351).

The spelling of 1310113021220 in words is "one trillion, three hundred ten billion, one hundred thirteen million, twenty-one thousand, two hundred twenty".