321400222 has 16 divisors (see below), whose sum is σ = 566384112. Its totient is φ = 134853120.

The previous prime is 321400193. The next prime is 321400267. The reversal of 321400222 is 222004123.

It is a junction number, because it is equal to n+sod(n) for n = 321400196 and 321400205.

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, 561603 + ... + 562174.

It is an arithmetic number, because the mean of its divisors is an integer number (35399007).

Almost surely, 2^321400222 is an apocalyptic number.

321400222 is a deficient number, since it is larger than the sum of its proper divisors (244983890).

321400222 is a wasteful number, since it uses less digits than its factorization.

321400222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123803.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 321400222 is about 17927.6384947935. The cubic root of 321400222 is about 684.9865712110.

Adding to 321400222 its reverse (222004123), we get a palindrome (543404345).

The spelling of 321400222 in words is "three hundred twenty-one million, four hundred thousand, two hundred twenty-two".