122191263838 has 12 divisors (see below), whose sum is σ = 213211287072. Its totient is φ = 52367684460.

The previous prime is 122191263827. The next prime is 122191263893. The reversal of 122191263838 is 838362191221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 623424718 + ... + 623424913.

It is an arithmetic number, because the mean of its divisors is an integer number (17767607256).

Almost surely, 2^122191263838 is an apocalyptic number.

122191263838 is a deficient number, since it is larger than the sum of its proper divisors (91020023234).

122191263838 is a wasteful number, since it uses less digits than its factorization.

122191263838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246849647 (or 1246849640 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The spelling of 122191263838 in words is "one hundred twenty-two billion, one hundred ninety-one million, two hundred sixty-three thousand, eight hundred thirty-eight".