22155227 has 2 divisors, whose sum is σ = 22155228. Its totient is φ = 22155226.

The previous prime is 22155223. The next prime is 22155239. The reversal of 22155227 is 72255122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22155227 - 2² = 22155223 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22155196 and 22155205.

It is not a weakly prime, because it can be changed into another prime (22155223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11077613 + 11077614.

It is an arithmetic number, because the mean of its divisors is an integer number (11077614).

Almost surely, 2^22155227 is an apocalyptic number.

22155227 is a deficient number, since it is larger than the sum of its proper divisors (1).

22155227 is an equidigital number, since it uses as much as digits as its factorization.

22155227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 26.

The square root of 22155227 is about 4706.9339277283. The cubic root of 22155227 is about 280.8614075744.

The spelling of 22155227 in words is "twenty-two million, one hundred fifty-five thousand, two hundred twenty-seven".