122340112191 has 24 divisors (see below), whose sum is σ = 192811492224. Its totient is φ = 74132778960.

The previous prime is 122340112183. The next prime is 122340112201. The reversal of 122340112191 is 191211043221.

122340112191 is a `hidden beast` number, since 1 + 22 + 340 + 112 + 191 = 666.

It is not a de Polignac number, because 122340112191 - 2³ = 122340112183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122340112151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 489510 + ... + 695916.

It is an arithmetic number, because the mean of its divisors is an integer number (8033812176).

Almost surely, 2^122340112191 is an apocalyptic number.

122340112191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122340112191 is a deficient number, since it is larger than the sum of its proper divisors (70471380033).

122340112191 is a wasteful number, since it uses less digits than its factorization.

122340112191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212411 (or 212408 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 122340112191 in words is "one hundred twenty-two billion, three hundred forty million, one hundred twelve thousand, one hundred ninety-one".