12101122191 has 16 divisors (see below), whose sum is σ = 16327180800. Its totient is φ = 7971559200.

The previous prime is 12101122177. The next prime is 12101122193. The reversal of 12101122191 is 19122110121.

It is not a de Polignac number, because 12101122191 - 2⁷ = 12101122063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101122193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112710 + ... + 192108.

It is an arithmetic number, because the mean of its divisors is an integer number (1020448800).

Almost surely, 2^12101122191 is an apocalyptic number.

12101122191 is a deficient number, since it is larger than the sum of its proper divisors (4226058609).

12101122191 is a wasteful number, since it uses less digits than its factorization.

12101122191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80006.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 12101122191 in words is "twelve billion, one hundred one million, one hundred twenty-two thousand, one hundred ninety-one".