322121110120021 has 4 divisors (see below), whose sum is σ = 322122224525472. Its totient is φ = 322119995714572.

The previous prime is 322121110119983. The next prime is 322121110120133. The reversal of 322121110120021 is 120021011121223.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 322121110120021 - 2¹⁵ = 322121110087253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322121110120421) 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, 556769035 + ... + 557347288.

It is an arithmetic number, because the mean of its divisors is an integer number (80530556131368).

Almost surely, 2^{322121110120021} is an apocalyptic number.

It is an amenable number.

322121110120021 is a deficient number, since it is larger than the sum of its proper divisors (1114405451).

322121110120021 is a wasteful number, since it uses less digits than its factorization.

322121110120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114405450.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 322121110120021 its reverse (120021011121223), we get a palindrome (442142121241244).

The spelling of 322121110120021 in words is "three hundred twenty-two trillion, one hundred twenty-one billion, one hundred ten million, one hundred twenty thousand, twenty-one".