122242172 has 24 divisors (see below), whose sum is σ = 243932976. Its totient is φ = 53100288.

The previous prime is 122242129. The next prime is 122242177. The reversal of 122242172 is 271242221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122242177) 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 7 ways as a sum of consecutive naturals, for example, 68258 + ... + 70025.

It is an arithmetic number, because the mean of its divisors is an integer number (10163874).

Almost surely, 2^122242172 is an apocalyptic number.

It is an amenable number.

122242172 is a deficient number, since it is larger than the sum of its proper divisors (121690804).

122242172 is a wasteful number, since it uses less digits than its factorization.

122242172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138317 (or 138315 counting only the distinct ones).

The product of its digits is 896, while the sum is 23.

The square root of 122242172 is about 11056.3181936846. The cubic root of 122242172 is about 496.2955174004.

Adding to 122242172 its reverse (271242221), we get a palindrome (393484393).

The spelling of 122242172 in words is "one hundred twenty-two million, two hundred forty-two thousand, one hundred seventy-two".