122680091 has 4 divisors (see below), whose sum is σ = 128014032. Its totient is φ = 117346152.

The previous prime is 122680087. The next prime is 122680111. The reversal of 122680091 is 190086221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190086221 = 13 ⋅14622017.

It is a cyclic number.

It is not a de Polignac number, because 122680091 - 2² = 122680087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122680021) 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, 2666936 + ... + 2666981.

It is an arithmetic number, because the mean of its divisors is an integer number (32003508).

Almost surely, 2^122680091 is an apocalyptic number.

122680091 is a deficient number, since it is larger than the sum of its proper divisors (5333941).

122680091 is an equidigital number, since it uses as much as digits as its factorization.

122680091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5333940.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 122680091 is about 11076.1045047435. The cubic root of 122680091 is about 496.8874522992.

The spelling of 122680091 in words is "one hundred twenty-two million, six hundred eighty thousand, ninety-one".