321345222543122 has 16 divisors (see below), whose sum is σ = 516960536765760. Its totient is φ = 149344155063792.

The previous prime is 321345222543109. The next prime is 321345222543139. The reversal of 321345222543122 is 221345222543123.

It is a super-2 number, since 2×321345222543122² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 321345222543122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79777858598 + ... + 79777862625.

It is an arithmetic number, because the mean of its divisors is an integer number (32310033547860).

Almost surely, 2^{321345222543122} is an apocalyptic number.

321345222543122 is a deficient number, since it is larger than the sum of its proper divisors (195615314222638).

321345222543122 is a wasteful number, since it uses less digits than its factorization.

321345222543122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159555721297.

The product of its digits is 691200, while the sum is 41.

Subtracting from 321345222543122 its reverse (221345222543123), we obtain a palindrome (99999999999999).

The spelling of 321345222543122 in words is "three hundred twenty-one trillion, three hundred forty-five billion, two hundred twenty-two million, five hundred forty-three thousand, one hundred twenty-two".