121255121 has 8 divisors (see below), whose sum is σ = 131523840. Its totient is φ = 111120912.

The previous prime is 121255111. The next prime is 121255171. The reversal of 121255121 is 121552121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121255121 - 2²² = 117060817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121255093 and 121255102.

It is not an unprimeable number, because it can be changed into a prime (121255111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31745 + ... + 35358.

It is an arithmetic number, because the mean of its divisors is an integer number (16440480).

Almost surely, 2^121255121 is an apocalyptic number.

It is an amenable number.

121255121 is a deficient number, since it is larger than the sum of its proper divisors (10268719).

121255121 is a wasteful number, since it uses less digits than its factorization.

121255121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67255.

The product of its digits is 200, while the sum is 20.

The square root of 121255121 is about 11011.5903029490. The cubic root of 121255121 is about 494.9561175941.

The spelling of 121255121 in words is "one hundred twenty-one million, two hundred fifty-five thousand, one hundred twenty-one".