1312321011212 has 24 divisors (see below), whose sum is σ = 2350112821056. Its totient is φ = 640862057808.

The previous prime is 1312321011161. The next prime is 1312321011223. The reversal of 1312321011212 is 2121101232131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2719403 + ... + 3165405.

It is an arithmetic number, because the mean of its divisors is an integer number (97921367544).

Almost surely, 2^{1312321011212} is an apocalyptic number.

It is an amenable number.

1312321011212 is a deficient number, since it is larger than the sum of its proper divisors (1037791809844).

1312321011212 is a wasteful number, since it uses less digits than its factorization.

1312321011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463157 (or 463155 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1312321011212 its reverse (2121101232131), we get a palindrome (3433422243343).

The spelling of 1312321011212 in words is "one trillion, three hundred twelve billion, three hundred twenty-one million, eleven thousand, two hundred twelve".