122891668 has 24 divisors (see below), whose sum is σ = 227771712. Its totient is φ = 57894144.

The previous prime is 122891653. The next prime is 122891687. The reversal of 122891668 is 866198221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3805 + ... + 16132.

It is an arithmetic number, because the mean of its divisors is an integer number (9490488).

Almost surely, 2^122891668 is an apocalyptic number.

It is an amenable number.

122891668 is a deficient number, since it is larger than the sum of its proper divisors (104880044).

122891668 is a wasteful number, since it uses less digits than its factorization.

122891668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20031 (or 20029 counting only the distinct ones).

The product of its digits is 82944, while the sum is 43.

The square root of 122891668 is about 11085.6514468028. The cubic root of 122891668 is about 497.1729362136.

The spelling of 122891668 in words is "one hundred twenty-two million, eight hundred ninety-one thousand, six hundred sixty-eight".