122117191 has 8 divisors (see below), whose sum is σ = 139636224. Its totient is φ = 104616600.

The previous prime is 122117159. The next prime is 122117209. The reversal of 122117191 is 191711221.

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

It is a cyclic number.

It is not a de Polignac number, because 122117191 - 2⁵ = 122117159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122117111) 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, 15366 + ... + 21916.

It is an arithmetic number, because the mean of its divisors is an integer number (17454528).

Almost surely, 2^122117191 is an apocalyptic number.

122117191 is a deficient number, since it is larger than the sum of its proper divisors (17519033).

122117191 is an equidigital number, since it uses as much as digits as its factorization.

122117191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9221.

The product of its digits is 252, while the sum is 25.

The square root of 122117191 is about 11050.6647311372. The cubic root of 122117191 is about 496.1263213962.

The spelling of 122117191 in words is "one hundred twenty-two million, one hundred seventeen thousand, one hundred ninety-one".