122101111091 has 4 divisors (see below), whose sum is σ = 122103122592. Its totient is φ = 122099099592.

The previous prime is 122101111079. The next prime is 122101111109. The reversal of 122101111091 is 190111101221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122101111091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122101111061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911771 + ... + 1037076.

It is an arithmetic number, because the mean of its divisors is an integer number (30525780648).

Almost surely, 2^122101111091 is an apocalyptic number.

122101111091 is a deficient number, since it is larger than the sum of its proper divisors (2011501).

122101111091 is an equidigital number, since it uses as much as digits as its factorization.

122101111091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011500.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 122101111091 in words is "one hundred twenty-two billion, one hundred one million, one hundred eleven thousand, ninety-one".