121255241 has 4 divisors (see below), whose sum is σ = 126527232. Its totient is φ = 115983252.

The previous prime is 121255231. The next prime is 121255249. The reversal of 121255241 is 142552121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142552121 = 41 ⋅3476881.

It is a cyclic number.

It is not a de Polignac number, because 121255241 - 2¹⁴ = 121238857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 5271967 = 121255241 / (1 + 2 + 1 + 2 + 5 + 5 + 2 + 4 + 1).

It is not an unprimeable number, because it can be changed into a prime (121255249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2635961 + ... + 2636006.

It is an arithmetic number, because the mean of its divisors is an integer number (31631808).

Almost surely, 2^121255241 is an apocalyptic number.

It is an amenable number.

121255241 is a deficient number, since it is larger than the sum of its proper divisors (5271991).

121255241 is an equidigital number, since it uses as much as digits as its factorization.

121255241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271990.

The product of its digits is 800, while the sum is 23.

The square root of 121255241 is about 11011.5957517519. The cubic root of 121255241 is about 494.9562808716.

The spelling of 121255241 in words is "one hundred twenty-one million, two hundred fifty-five thousand, two hundred forty-one".