122397991197 has 8 divisors (see below), whose sum is σ = 163395620544. Its totient is φ = 81499511328.

The previous prime is 122397991187. The next prime is 122397991237. The reversal of 122397991197 is 791199793221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122397991197 - 2⁴ = 122397991181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122397991197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122397991187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24784488 + ... + 24789425.

It is an arithmetic number, because the mean of its divisors is an integer number (20424452568).

Almost surely, 2^122397991197 is an apocalyptic number.

It is an amenable number.

122397991197 is a deficient number, since it is larger than the sum of its proper divisors (40997629347).

122397991197 is an equidigital number, since it uses as much as digits as its factorization.

122397991197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49574739.

The product of its digits is 3857868, while the sum is 60.

The spelling of 122397991197 in words is "one hundred twenty-two billion, three hundred ninety-seven million, nine hundred ninety-one thousand, one hundred ninety-seven".