1312232121002 has 12 divisors (see below), whose sum is σ = 2163556266018. Its totient is φ = 596469145800.

The previous prime is 1312232120993. The next prime is 1312232121077. The reversal of 1312232121002 is 2001212322131.

It can be written as a sum of positive squares in only one way, i.e., 985312331641 + 326919789361 = 992629^2 + 571769^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2711223149 + ... + 2711223632.

Almost surely, 2^{1312232121002} is an apocalyptic number.

1312232121002 is a deficient number, since it is larger than the sum of its proper divisors (851324145016).

1312232121002 is a wasteful number, since it uses less digits than its factorization.

1312232121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5422446805 (or 5422446794 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1312232121002 its reverse (2001212322131), we get a palindrome (3313444443133).

The spelling of 1312232121002 in words is "one trillion, three hundred twelve billion, two hundred thirty-two million, one hundred twenty-one thousand, two".