1321133765424 has 40 divisors (see below), whose sum is σ = 3723195158592. Its totient is φ = 400343565120.

The previous prime is 1321133765407. The next prime is 1321133765461. The reversal of 1321133765424 is 4245673311231.

It is a super-2 number, since 2×1321133765424² (a number of 25 digits) contains 22 as substring.

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, 1251073114 + ... + 1251074169.

Almost surely, 2^{1321133765424} is an apocalyptic number.

It is an amenable number.

1321133765424 is an abundant number, since it is smaller than the sum of its proper divisors (2402061393168).

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

1321133765424 is a wasteful number, since it uses less digits than its factorization.

1321133765424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502147305 (or 2502147299 counting only the distinct ones).

The product of its digits is 362880, while the sum is 42.

The spelling of 1321133765424 in words is "one trillion, three hundred twenty-one billion, one hundred thirty-three million, seven hundred sixty-five thousand, four hundred twenty-four".