1313122221992 has 16 divisors (see below), whose sum is σ = 2813833332960. Its totient is φ = 562766666544.

The previous prime is 1313122221991. The next prime is 1313122221997. The reversal of 1313122221992 is 2991222213131.

It is not an unprimeable number, because it can be changed into a prime (1313122221991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11724305498 + ... + 11724305609.

It is an arithmetic number, because the mean of its divisors is an integer number (175864583310).

Almost surely, 2^{1313122221992} is an apocalyptic number.

It is an amenable number.

1313122221992 is an abundant number, since it is smaller than the sum of its proper divisors (1500711110968).

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

1313122221992 is a wasteful number, since it uses less digits than its factorization.

1313122221992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23448611120 (or 23448611116 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The spelling of 1313122221992 in words is "one trillion, three hundred thirteen billion, one hundred twenty-two million, two hundred twenty-one thousand, nine hundred ninety-two".