321661322 has 16 divisors (see below), whose sum is σ = 486681480. Its totient is φ = 159439872.

The previous prime is 321661321. The next prime is 321661331. The reversal of 321661322 is 223166123.

321661322 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 290736601 + 30924721 = 17051^2 + 5561^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321661291 and 321661300.

It is not an unprimeable number, because it can be changed into a prime (321661321) 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, 140378 + ... + 142650.

Almost surely, 2^321661322 is an apocalyptic number.

321661322 is a deficient number, since it is larger than the sum of its proper divisors (165020158).

321661322 is a wasteful number, since it uses less digits than its factorization.

321661322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857.

The product of its digits is 2592, while the sum is 26.

The square root of 321661322 is about 17934.9190686772. The cubic root of 321661322 is about 685.1720114314.

The spelling of 321661322 in words is "three hundred twenty-one million, six hundred sixty-one thousand, three hundred twenty-two".