122110310921 has 2 divisors, whose sum is σ = 122110310922. Its totient is φ = 122110310920.

The previous prime is 122110310899. The next prime is 122110310923. The reversal of 122110310921 is 129013011221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114673663225 + 7436647696 = 338635^2 + 86236^2 .

It is a cyclic number.

It is not a de Polignac number, because 122110310921 - 2¹⁰ = 122110309897 is a prime.

Together with 122110310923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122110310923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61055155460 + 61055155461.

It is an arithmetic number, because the mean of its divisors is an integer number (61055155461).

Almost surely, 2^122110310921 is an apocalyptic number.

It is an amenable number.

122110310921 is a deficient number, since it is larger than the sum of its proper divisors (1).

122110310921 is an equidigital number, since it uses as much as digits as its factorization.

122110310921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 122110310921 in words is "one hundred twenty-two billion, one hundred ten million, three hundred ten thousand, nine hundred twenty-one".