22020331 has 4 divisors (see below), whose sum is σ = 22042000. Its totient is φ = 21998664.

The previous prime is 22020319. The next prime is 22020337. The reversal of 22020331 is 13302022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22020331 - 2⁷ = 22020203 is a prime.

It is a super-2 number, since 2×22020331² = 969789954699122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22020337) 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, 9231 + ... + 11368.

It is an arithmetic number, because the mean of its divisors is an integer number (5510500).

Almost surely, 2^22020331 is an apocalyptic number.

22020331 is a deficient number, since it is larger than the sum of its proper divisors (21669).

22020331 is a wasteful number, since it uses less digits than its factorization.

22020331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21668.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 22020331 is about 4692.5825512185. The cubic root of 22020331 is about 280.2902220380.

Adding to 22020331 its reverse (13302022), we get a palindrome (35322353).

The spelling of 22020331 in words is "twenty-two million, twenty thousand, three hundred thirty-one".