122189788 has 18 divisors (see below), whose sum is σ = 244496616. Its totient is φ = 52341984.

The previous prime is 122189783. The next prime is 122189813. The reversal of 122189788 is 887981221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122189783) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57448 + ... + 59536.

Almost surely, 2^122189788 is an apocalyptic number.

It is an amenable number.

122189788 is an abundant number, since it is smaller than the sum of its proper divisors (122306828).

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

122189788 is an frugal number, since it uses more digits than its factorization.

122189788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4189 (or 2098 counting only the distinct ones).

The product of its digits is 129024, while the sum is 46.

The square root of 122189788 is about 11053.9489776279. The cubic root of 122189788 is about 496.2246153584.

The spelling of 122189788 in words is "one hundred twenty-two million, one hundred eighty-nine thousand, seven hundred eighty-eight".