22158122 has 16 divisors (see below), whose sum is σ = 38912832. Its totient is φ = 9264480.

The previous prime is 22158121. The next prime is 22158229. The reversal of 22158122 is 22185122.

It is not an unprimeable number, because it can be changed into a prime (22158121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18728 + ... + 19875.

It is an arithmetic number, because the mean of its divisors is an integer number (2432052).

Almost surely, 2^22158122 is an apocalyptic number.

22158122 is a deficient number, since it is larger than the sum of its proper divisors (16754710).

22158122 is a wasteful number, since it uses less digits than its factorization.

22158122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38653.

The product of its digits is 640, while the sum is 23.

The square root of 22158122 is about 4707.2414427136. The cubic root of 22158122 is about 280.8736403289.

Subtracting 22158122 from its reverse (22185122), we obtain a cube (27000 = 30³).

The spelling of 22158122 in words is "twenty-two million, one hundred fifty-eight thousand, one hundred twenty-two".