1321223132992 has 42 divisors (see below), whose sum is σ = 3049851493122. Its totient is φ = 566238484224.

The previous prime is 1321223132969. The next prime is 1321223133007. The reversal of 1321223132992 is 2992313221231.

It can be written as a sum of positive squares in only one way, i.e., 1144163958336 + 177059174656 = 1069656^2 + 420784^2 .

It is a super-2 number, since 2×1321223132992² (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 5 ways as a sum of consecutive naturals, for example, 210651063 + ... + 210657334.

It is an arithmetic number, because the mean of its divisors is an integer number (72615511741).

Almost surely, 2^{1321223132992} is an apocalyptic number.

It is an amenable number.

1321223132992 is an abundant number, since it is smaller than the sum of its proper divisors (1728628360130).

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

1321223132992 is an equidigital number, since it uses as much as digits as its factorization.

1321223132992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421308423 (or 421308406 counting only the distinct ones).

The product of its digits is 69984, while the sum is 40.

The spelling of 1321223132992 in words is "one trillion, three hundred twenty-one billion, two hundred twenty-three million, one hundred thirty-two thousand, nine hundred ninety-two".