122641091 has 2 divisors, whose sum is σ = 122641092. Its totient is φ = 122641090.

The previous prime is 122641073. The next prime is 122641109. The reversal of 122641091 is 190146221.

Together with next prime (122641109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (122641073) and next prime (122641109).

It is a cyclic number.

It is not a de Polignac number, because 122641091 - 2⁶ = 122641027 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122641091.

It is not a weakly prime, because it can be changed into another prime (122641061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61320545 + 61320546.

It is an arithmetic number, because the mean of its divisors is an integer number (61320546).

Almost surely, 2^122641091 is an apocalyptic number.

122641091 is a deficient number, since it is larger than the sum of its proper divisors (1).

122641091 is an equidigital number, since it uses as much as digits as its factorization.

122641091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 122641091 is about 11074.3438180327. The cubic root of 122641091 is about 496.8347932130.

The spelling of 122641091 in words is "one hundred twenty-two million, six hundred forty-one thousand, ninety-one".