22112681 has 4 divisors (see below), whose sum is σ = 22224000. Its totient is φ = 22001364.

The previous prime is 22112677. The next prime is 22112693. The reversal of 22112681 is 18621122.

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 a cyclic number.

It is not a de Polignac number, because 22112681 - 2² = 22112677 is a prime.

It is a super-2 number, since 2×22112681² = 977941322015522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22112081) 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, 55361 + ... + 55758.

It is an arithmetic number, because the mean of its divisors is an integer number (5556000).

Almost surely, 2^22112681 is an apocalyptic number.

It is an amenable number.

22112681 is a deficient number, since it is larger than the sum of its proper divisors (111319).

22112681 is a wasteful number, since it uses less digits than its factorization.

22112681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111318.

The product of its digits is 384, while the sum is 23.

The square root of 22112681 is about 4702.4122533015. The cubic root of 22112681 is about 280.6815074128.

The spelling of 22112681 in words is "twenty-two million, one hundred twelve thousand, six hundred eighty-one".