321122091052 has 48 divisors (see below), whose sum is σ = 656589846528. Its totient is φ = 134555762880.

The previous prime is 321122091049. The next prime is 321122091137. The reversal of 321122091052 is 250190221123.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 321122091052.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1146402 + ... + 1398742.

It is an arithmetic number, because the mean of its divisors is an integer number (13678955136).

Almost surely, 2^321122091052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321122091052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328294923264).

321122091052 is an abundant number, since it is smaller than the sum of its proper divisors (335467755476).

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

321122091052 is a wasteful number, since it uses less digits than its factorization.

321122091052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253366 (or 253364 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 321122091052 in words is "three hundred twenty-one billion, one hundred twenty-two million, ninety-one thousand, fifty-two".