122135275221 has 12 divisors (see below), whose sum is σ = 163852331328. Its totient is φ = 80923933224.

The previous prime is 122135275217. The next prime is 122135275231. The reversal of 122135275221 is 122572531221.

It is not a de Polignac number, because 122135275221 - 2² = 122135275217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122135275231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 686445 + ... + 845858.

It is an arithmetic number, because the mean of its divisors is an integer number (13654360944).

Almost surely, 2^122135275221 is an apocalyptic number.

It is an amenable number.

122135275221 is a deficient number, since it is larger than the sum of its proper divisors (41717056107).

122135275221 is an equidigital number, since it uses as much as digits as its factorization.

122135275221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532632 (or 1532469 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The spelling of 122135275221 in words is "one hundred twenty-two billion, one hundred thirty-five million, two hundred seventy-five thousand, two hundred twenty-one".