1291324135922 has 30 divisors (see below), whose sum is σ = 1977380956383. Its totient is φ = 632472106596.

The previous prime is 1291324135903. The next prime is 1291324135939. The reversal of 1291324135922 is 2295314231921.

It can be written as a sum of positive squares in only one way, i.e., 645662067961 + 645662067961 = 803531^2 + 803531^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=803531.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 7214101229 + ... + 7214101407.

Almost surely, 2^{1291324135922} is an apocalyptic number.

1291324135922 is a deficient number, since it is larger than the sum of its proper divisors (686056820461).

1291324135922 is an frugal number, since it uses more digits than its factorization.

1291324135922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628 (or 248 counting only the distinct ones).

The product of its digits is 233280, while the sum is 44.

The spelling of 1291324135922 in words is "one trillion, two hundred ninety-one billion, three hundred twenty-four million, one hundred thirty-five thousand, nine hundred twenty-two".