321213021123 has 16 divisors (see below), whose sum is σ = 430720284672. Its totient is φ = 212925804000.

The previous prime is 321213021097. The next prime is 321213021127. The reversal of 321213021123 is 321120312123.

It is not a de Polignac number, because 321213021123 - 2²⁵ = 321179466691 is a prime.

It is a super-2 number, since 2×321213021123² (a number of 24 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 321213021123.

It is not an unprimeable number, because it can be changed into a prime (321213021127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432478 + ... + 910748.

It is an arithmetic number, because the mean of its divisors is an integer number (26920017792).

Almost surely, 2^321213021123 is an apocalyptic number.

321213021123 is a deficient number, since it is larger than the sum of its proper divisors (109507263549).

321213021123 is a wasteful number, since it uses less digits than its factorization.

321213021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479546.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 321213021123 its reverse (321120312123), we get a palindrome (642333333246).

The spelling of 321213021123 in words is "three hundred twenty-one billion, two hundred thirteen million, twenty-one thousand, one hundred twenty-three".