22122129 has 4 divisors (see below), whose sum is σ = 29496176. Its totient is φ = 14748084.

The previous prime is 22122103. The next prime is 22122169. The reversal of 22122129 is 92122122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22122129 - 2⁵ = 22122097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22122169) 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 3 ways as a sum of consecutive naturals, for example, 3687019 + ... + 3687024.

It is an arithmetic number, because the mean of its divisors is an integer number (7374044).

Almost surely, 2^22122129 is an apocalyptic number.

It is an amenable number.

22122129 is a deficient number, since it is larger than the sum of its proper divisors (7374047).

22122129 is an equidigital number, since it uses as much as digits as its factorization.

22122129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7374046.

The product of its digits is 288, while the sum is 21.

The square root of 22122129 is about 4703.4167367989. The cubic root of 22122129 is about 280.7214769562.

The spelling of 22122129 in words is "twenty-two million, one hundred twenty-two thousand, one hundred twenty-nine".