22156011 has 24 divisors (see below), whose sum is σ = 33670000. Its totient is φ = 14556672.

The previous prime is 22156009. The next prime is 22156019. The reversal of 22156011 is 11065122.

It is not a de Polignac number, because 22156011 - 2¹ = 22156009 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 (22156019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17115 + ... + 18363.

Almost surely, 2^22156011 is an apocalyptic number.

22156011 is a deficient number, since it is larger than the sum of its proper divisors (11513989).

22156011 is an equidigital number, since it uses as much as digits as its factorization.

22156011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 22156011 is about 4707.0172083815. The cubic root of 22156011 is about 280.8647204532.

The spelling of 22156011 in words is "twenty-two million, one hundred fifty-six thousand, eleven".