22013331 has 4 divisors (see below), whose sum is σ = 29351112. Its totient is φ = 14675552.

The previous prime is 22013281. The next prime is 22013339. The reversal of 22013331 is 13331022.

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 22013331 - 2⁷ = 22013203 is a prime.

It is a super-2 number, since 2×22013331² = 969173483431122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22013331.

It is not an unprimeable number, because it can be changed into a prime (22013339) 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, 3668886 + ... + 3668891.

It is an arithmetic number, because the mean of its divisors is an integer number (7337778).

Almost surely, 2^22013331 is an apocalyptic number.

22013331 is a deficient number, since it is larger than the sum of its proper divisors (7337781).

22013331 is an equidigital number, since it uses as much as digits as its factorization.

22013331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7337780.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 22013331 is about 4691.8366339846. The cubic root of 22013331 is about 280.2605185866.

Adding to 22013331 its reverse (13331022), we get a palindrome (35344353).

The spelling of 22013331 in words is "twenty-two million, thirteen thousand, three hundred thirty-one".