122017665811 has 2 divisors, whose sum is σ = 122017665812. Its totient is φ = 122017665810.

The previous prime is 122017665779. The next prime is 122017665859. The reversal of 122017665811 is 118566710221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122017665811 - 2⁵ = 122017665779 is a prime.

It is not a weakly prime, because it can be changed into another prime (122017665611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61008832905 + 61008832906.

It is an arithmetic number, because the mean of its divisors is an integer number (61008832906).

Almost surely, 2^122017665811 is an apocalyptic number.

122017665811 is a deficient number, since it is larger than the sum of its proper divisors (1).

122017665811 is an equidigital number, since it uses as much as digits as its factorization.

122017665811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 40.

The spelling of 122017665811 in words is "one hundred twenty-two billion, seventeen million, six hundred sixty-five thousand, eight hundred eleven".