321022552045 has 32 divisors (see below), whose sum is σ = 434274269184. Its totient is φ = 226184313600.

The previous prime is 321022552043. The next prime is 321022552079. The reversal of 321022552045 is 540255220123.

It is not a de Polignac number, because 321022552045 - 2¹ = 321022552043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321022551998 and 321022552016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321022552043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 978882 + ... + 1265011.

It is an arithmetic number, because the mean of its divisors is an integer number (13571070912).

Almost surely, 2^321022552045 is an apocalyptic number.

It is an amenable number.

321022552045 is a deficient number, since it is larger than the sum of its proper divisors (113251717139).

321022552045 is a wasteful number, since it uses less digits than its factorization.

321022552045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244013.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 321022552045 its reverse (540255220123), we get a palindrome (861277772168).

The spelling of 321022552045 in words is "three hundred twenty-one billion, twenty-two million, five hundred fifty-two thousand, forty-five".