22126961 has 4 divisors (see below), whose sum is σ = 22355172. Its totient is φ = 21898752.

The previous prime is 22126939. The next prime is 22126967. The reversal of 22126961 is 16962122.

It is a happy number.

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 15649936 + 6477025 = 3956^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 22126961 - 2²² = 17932657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22126967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113960 + ... + 114153.

It is an arithmetic number, because the mean of its divisors is an integer number (5588793).

Almost surely, 2^22126961 is an apocalyptic number.

It is an amenable number.

22126961 is a deficient number, since it is larger than the sum of its proper divisors (228211).

22126961 is an equidigital number, since it uses as much as digits as its factorization.

22126961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228210.

The product of its digits is 2592, while the sum is 29.

The square root of 22126961 is about 4703.9303778861. The cubic root of 22126961 is about 280.7419142210.

The spelling of 22126961 in words is "twenty-two million, one hundred twenty-six thousand, nine hundred sixty-one".