1312011111002 has 16 divisors (see below), whose sum is σ = 1982611917000. Its totient is φ = 651146637120.

The previous prime is 1312011111001. The next prime is 1312011111023. The reversal of 1312011111002 is 2001111102131.

It can be written as a sum of positive squares in 4 ways, for example, as 854698401001 + 457312710001 = 924499^2 + 676249^2 .

It is not an unprimeable number, because it can be changed into a prime (1312011111001) 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, 1114649 + ... + 1966332.

Almost surely, 2^{1312011111002} is an apocalyptic number.

1312011111002 is a deficient number, since it is larger than the sum of its proper divisors (670600805998).

1312011111002 is a wasteful number, since it uses less digits than its factorization.

1312011111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082561.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 1312011111002 its reverse (2001111102131), we get a palindrome (3313122213133).

The spelling of 1312011111002 in words is "one trillion, three hundred twelve billion, eleven million, one hundred eleven thousand, two".