321231400122 has 32 divisors (see below), whose sum is σ = 671267963520. Its totient is φ = 102288384000.

The previous prime is 321231400117. The next prime is 321231400123. The reversal of 321231400122 is 221004132123.

It is a super-2 number, since 2×321231400122² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321231400123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1407379 + ... + 1619622.

It is an arithmetic number, because the mean of its divisors is an integer number (20977123860).

Almost surely, 2^321231400122 is an apocalyptic number.

321231400122 is an abundant number, since it is smaller than the sum of its proper divisors (350036563398).

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

321231400122 is a wasteful number, since it uses less digits than its factorization.

321231400122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027798.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 321231400122 its reverse (221004132123), we get a palindrome (542235532245).

The spelling of 321231400122 in words is "three hundred twenty-one billion, two hundred thirty-one million, four hundred thousand, one hundred twenty-two".