12122110100091 has 32 divisors (see below), whose sum is σ = 16312395939840. Its totient is φ = 8007039079200.

The previous prime is 12122110100053. The next prime is 12122110100161. The reversal of 12122110100091 is 19000101122121.

It is not a de Polignac number, because 12122110100091 - 2⁶ = 12122110100027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12122110100021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137066676 + ... + 137155086.

It is an arithmetic number, because the mean of its divisors is an integer number (509762373120).

Almost surely, 2^{12122110100091} is an apocalyptic number.

12122110100091 is a deficient number, since it is larger than the sum of its proper divisors (4190285839749).

12122110100091 is a wasteful number, since it uses less digits than its factorization.

12122110100091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89607.

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

The spelling of 12122110100091 in words is "twelve trillion, one hundred twenty-two billion, one hundred ten million, one hundred thousand, ninety-one".