322220401 has 4 divisors (see below), whose sum is σ = 325410804. Its totient is φ = 319030000.

The previous prime is 322220399. The next prime is 322220407. The reversal of 322220401 is 104022223.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 301925376 + 20295025 = 17376^2 + 4505^2 .

It is a cyclic number.

It is not a de Polignac number, because 322220401 - 2¹ = 322220399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (322220407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1595050 + ... + 1595251.

It is an arithmetic number, because the mean of its divisors is an integer number (81352701).

Almost surely, 2^322220401 is an apocalyptic number.

It is an amenable number.

322220401 is a deficient number, since it is larger than the sum of its proper divisors (3190403).

322220401 is a wasteful number, since it uses less digits than its factorization.

322220401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190402.

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

The square root of 322220401 is about 17950.4986281719. The cubic root of 322220401 is about 685.5687471032.

Adding to 322220401 its reverse (104022223), we get a palindrome (426242624).

The spelling of 322220401 in words is "three hundred twenty-two million, two hundred twenty thousand, four hundred one".