22150187 has 2 divisors, whose sum is σ = 22150188. Its totient is φ = 22150186.

The previous prime is 22150169. The next prime is 22150211. The reversal of 22150187 is 78105122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22150187 - 2⁸ = 22149931 is a prime.

It is a Chen prime.

It is equal to p_1398104 and since 22150187 and 1398104 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (22150157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11075093 + 11075094.

It is an arithmetic number, because the mean of its divisors is an integer number (11075094).

Almost surely, 2^22150187 is an apocalyptic number.

22150187 is a deficient number, since it is larger than the sum of its proper divisors (1).

22150187 is an equidigital number, since it uses as much as digits as its factorization.

22150187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 22150187 is about 4706.3985169129. The cubic root of 22150187 is about 280.8401086299.

The spelling of 22150187 in words is "twenty-two million, one hundred fifty thousand, one hundred eighty-seven".