22138147 has 2 divisors, whose sum is σ = 22138148. Its totient is φ = 22138146.

The previous prime is 22138141. The next prime is 22138159. The reversal of 22138147 is 74183122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22138147 - 2³ = 22138139 is a prime.

It is not a weakly prime, because it can be changed into another prime (22138141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11069073 + 11069074.

It is an arithmetic number, because the mean of its divisors is an integer number (11069074).

Almost surely, 2^22138147 is an apocalyptic number.

22138147 is a deficient number, since it is larger than the sum of its proper divisors (1).

22138147 is an equidigital number, since it uses as much as digits as its factorization.

22138147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 28.

The square root of 22138147 is about 4705.1192333457. The cubic root of 22138147 is about 280.7892147369.

The spelling of 22138147 in words is "twenty-two million, one hundred thirty-eight thousand, one hundred forty-seven".