1231302121312 has 24 divisors (see below), whose sum is σ = 2448127305792. Its totient is φ = 609555504000.

The previous prime is 1231302121303. The next prime is 1231302121321. The reversal of 1231302121312 is 2131212031321.

It is an interprime number because it is at equal distance from previous prime (1231302121303) and next prime (1231302121321).

It is a super-2 number, since 2×1231302121312² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190482864 + ... + 190489327.

It is an arithmetic number, because the mean of its divisors is an integer number (102005304408).

Almost surely, 2^{1231302121312} is an apocalyptic number.

It is an amenable number.

1231302121312 is a deficient number, since it is larger than the sum of its proper divisors (1216825184480).

1231302121312 is a wasteful number, since it uses less digits than its factorization.

1231302121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380972302 (or 380972294 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1231302121312 its reverse (2131212031321), we get a palindrome (3362514152633).

The spelling of 1231302121312 in words is "one trillion, two hundred thirty-one billion, three hundred two million, one hundred twenty-one thousand, three hundred twelve".