321222122 has 16 divisors (see below), whose sum is σ = 519833160. Its totient is φ = 147988992.

The previous prime is 321222107. The next prime is 321222127. The reversal of 321222122 is 221222123.

It can be written as a sum of positive squares in 4 ways, for example, as 124970041 + 196252081 = 11179^2 + 14009^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 321222122.

It is not an unprimeable number, because it can be changed into a prime (321222127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3938 + ... + 25650.

Almost surely, 2^321222122 is an apocalyptic number.

321222122 is a deficient number, since it is larger than the sum of its proper divisors (198611038).

321222122 is a wasteful number, since it uses less digits than its factorization.

321222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22297.

The product of its digits is 192, while the sum is 17.

The square root of 321222122 is about 17922.6706157314. The cubic root of 321222122 is about 684.8600221909.

Adding to 321222122 its reverse (221222123), we get a palindrome (542444245).

Subtracting from 321222122 its reverse (221222123), we obtain a palindrome (99999999).

The spelling of 321222122 in words is "three hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".