121191597 has 24 divisors (see below), whose sum is σ = 177465600. Its totient is φ = 79691040.

The previous prime is 121191583. The next prime is 121191599. The reversal of 121191597 is 795191121.

It is not a de Polignac number, because 121191597 - 2⁸ = 121191341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121191599) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 280972 + ... + 281402.

It is an arithmetic number, because the mean of its divisors is an integer number (7394400).

Almost surely, 2^121191597 is an apocalyptic number.

It is an amenable number.

121191597 is a deficient number, since it is larger than the sum of its proper divisors (56274003).

121191597 is a wasteful number, since it uses less digits than its factorization.

121191597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793 (or 790 counting only the distinct ones).

The product of its digits is 5670, while the sum is 36.

The square root of 121191597 is about 11008.7055097318. The cubic root of 121191597 is about 494.8696687789.

The spelling of 121191597 in words is "one hundred twenty-one million, one hundred ninety-one thousand, five hundred ninety-seven".