1312202012004 has 72 divisors (see below), whose sum is σ = 3574575950400. Its totient is φ = 403475228352.

The previous prime is 1312202011979. The next prime is 1312202012027. The reversal of 1312202012004 is 4002102022131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 291654 + ... + 1646045.

It is an arithmetic number, because the mean of its divisors is an integer number (49646888200).

Almost surely, 2^{1312202012004} is an apocalyptic number.

It is an amenable number.

1312202012004 is an abundant number, since it is smaller than the sum of its proper divisors (2262373938396).

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

1312202012004 is a wasteful number, since it uses less digits than its factorization.

1312202012004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939169 (or 1939164 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1312202012004 its reverse (4002102022131), we get a palindrome (5314304034135).

The spelling of 1312202012004 in words is "one trillion, three hundred twelve billion, two hundred two million, twelve thousand, four".