122266172 has 72 divisors (see below), whose sum is σ = 258073200. Its totient is φ = 50512896.

The previous prime is 122266169. The next prime is 122266181. The reversal of 122266172 is 271662221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 1121654 + ... + 1121762.

It is an arithmetic number, because the mean of its divisors is an integer number (3584350).

Almost surely, 2^122266172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122266172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129036600).

122266172 is an abundant number, since it is smaller than the sum of its proper divisors (135807028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122266172 is a wasteful number, since it uses less digits than its factorization.

122266172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 274 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 122266172 is about 11057.4034926831. The cubic root of 122266172 is about 496.3279947711.

The spelling of 122266172 in words is "one hundred twenty-two million, two hundred sixty-six thousand, one hundred seventy-two".