321000222 has 16 divisors (see below), whose sum is σ = 679765392. Its totient is φ = 100705920.

The previous prime is 321000181. The next prime is 321000241. The reversal of 321000222 is 222000123.

It is a super-2 number, since 2×321000222² = 206082285048098568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321000198 and 321000207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1573429 + ... + 1573632.

It is an arithmetic number, because the mean of its divisors is an integer number (42485337).

Almost surely, 2^321000222 is an apocalyptic number.

321000222 is an abundant number, since it is smaller than the sum of its proper divisors (358765170).

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

321000222 is a wasteful number, since it uses less digits than its factorization.

321000222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147083.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 321000222 is about 17916.4790625837. The cubic root of 321000222 is about 684.7022856013.

Adding to 321000222 its reverse (222000123), we get a palindrome (543000345).

Subtracting from 321000222 its reverse (222000123), we obtain a palindrome (99000099).

The spelling of 321000222 in words is "three hundred twenty-one million, two hundred twenty-two", and thus it is an aban number.