122201011091 has 2 divisors, whose sum is σ = 122201011092. Its totient is φ = 122201011090.

The previous prime is 122201011061. The next prime is 122201011099. The reversal of 122201011091 is 190110102221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122201011091 is a prime.

It is a super-2 number, since 2×122201011091² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122201011099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61100505545 + 61100505546.

It is an arithmetic number, because the mean of its divisors is an integer number (61100505546).

Almost surely, 2^122201011091 is an apocalyptic number.

122201011091 is a deficient number, since it is larger than the sum of its proper divisors (1).

122201011091 is an equidigital number, since it uses as much as digits as its factorization.

122201011091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 122201011091 in words is "one hundred twenty-two billion, two hundred one million, eleven thousand, ninety-one".