1312111213210 has 16 divisors (see below), whose sum is σ = 2699200210176. Its totient is φ = 449866701648.

The previous prime is 1312111213169. The next prime is 1312111213211. The reversal of 1312111213210 is 123121112131.

It is not an unprimeable number, because it can be changed into a prime (1312111213211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9372222882 + ... + 9372223021.

It is an arithmetic number, because the mean of its divisors is an integer number (168700013136).

Almost surely, 2^{1312111213210} is an apocalyptic number.

1312111213210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312111213210 is an abundant number, since it is smaller than the sum of its proper divisors (1387088996966).

1312111213210 is a wasteful number, since it uses less digits than its factorization.

1312111213210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18744445917.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1312111213210 its reverse (123121112131), we get a palindrome (1435232325341).

The spelling of 1312111213210 in words is "one trillion, three hundred twelve billion, one hundred eleven million, two hundred thirteen thousand, two hundred ten".