122171959 has 24 divisors (see below), whose sum is σ = 153760992. Its totient is φ = 95022720.

The previous prime is 122171953. The next prime is 122171963. The reversal of 122171959 is 959171221.

It is not a de Polignac number, because 122171959 - 2⁵ = 122171927 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122171953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71317 + ... + 73009.

It is an arithmetic number, because the mean of its divisors is an integer number (6406708).

Almost surely, 2^122171959 is an apocalyptic number.

122171959 is a deficient number, since it is larger than the sum of its proper divisors (31589033).

122171959 is a wasteful number, since it uses less digits than its factorization.

122171959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787 (or 1774 counting only the distinct ones).

The product of its digits is 11340, while the sum is 37.

The square root of 122171959 is about 11053.1424943316. The cubic root of 122171959 is about 496.2004790833.

The spelling of 122171959 in words is "one hundred twenty-two million, one hundred seventy-one thousand, nine hundred fifty-nine".