121317627221 has 24 divisors (see below), whose sum is σ = 149251152960. Its totient is φ = 96264910080.

The previous prime is 121317627203. The next prime is 121317627259. The reversal of 121317627221 is 122726713121.

It is not a de Polignac number, because 121317627221 - 2⁶ = 121317627157 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 (121317627271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305810 + ... + 579788.

It is an arithmetic number, because the mean of its divisors is an integer number (6218798040).

Almost surely, 2^121317627221 is an apocalyptic number.

It is an amenable number.

121317627221 is a deficient number, since it is larger than the sum of its proper divisors (27933525739).

121317627221 is an equidigital number, since it uses as much as digits as its factorization.

121317627221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274125 (or 274064 counting only the distinct ones).

The product of its digits is 14112, while the sum is 35.

The spelling of 121317627221 in words is "one hundred twenty-one billion, three hundred seventeen million, six hundred twenty-seven thousand, two hundred twenty-one".