1312111332210 has 64 divisors (see below), whose sum is σ = 3672381600000. Its totient is φ = 299911159296.

The previous prime is 1312111332157. The next prime is 1312111332223. The reversal of 1312111332210 is 122331112131.

It is a super-2 number, since 2×1312111332210² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 63746335 + ... + 63766914.

It is an arithmetic number, because the mean of its divisors is an integer number (57380962500).

Almost surely, 2^{1312111332210} is an apocalyptic number.

1312111332210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312111332210 is an abundant number, since it is smaller than the sum of its proper divisors (2360270267790).

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

1312111332210 is a wasteful number, since it uses less digits than its factorization.

1312111332210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127513280 (or 127513266 counting only the distinct ones).

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

Adding to 1312111332210 its reverse (122331112131), we get a palindrome (1434442444341).

The spelling of 1312111332210 in words is "one trillion, three hundred twelve billion, one hundred eleven million, three hundred thirty-two thousand, two hundred ten".