22112661 has 4 divisors (see below), whose sum is σ = 29483552. Its totient is φ = 14741772.

The previous prime is 22112647. The next prime is 22112677. The reversal of 22112661 is 16621122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22112661 - 2⁹ = 22112149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112861) 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, 3685441 + ... + 3685446.

It is an arithmetic number, because the mean of its divisors is an integer number (7370888).

Almost surely, 2^22112661 is an apocalyptic number.

It is an amenable number.

22112661 is a deficient number, since it is larger than the sum of its proper divisors (7370891).

22112661 is an equidigital number, since it uses as much as digits as its factorization.

22112661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7370890.

The product of its digits is 288, while the sum is 21.

The square root of 22112661 is about 4702.4101267329. The cubic root of 22112661 is about 280.6814227912.

Adding to 22112661 its reverse (16621122), we get a palindrome (38733783).

The spelling of 22112661 in words is "twenty-two million, one hundred twelve thousand, six hundred sixty-one".