121252113 has 16 divisors (see below), whose sum is σ = 187443840. Its totient is φ = 77319792.

The previous prime is 121252099. The next prime is 121252147. The reversal of 121252113 is 311252121.

It is not a de Polignac number, because 121252113 - 2⁶ = 121252049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121252163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97006 + ... + 98247.

It is an arithmetic number, because the mean of its divisors is an integer number (11715240).

Almost surely, 2^121252113 is an apocalyptic number.

It is an amenable number.

121252113 is a deficient number, since it is larger than the sum of its proper divisors (66191727).

121252113 is a wasteful number, since it uses less digits than its factorization.

121252113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195285 (or 195279 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 121252113 is about 11011.4537187421. The cubic root of 121252113 is about 494.9520247352.

The spelling of 121252113 in words is "one hundred twenty-one million, two hundred fifty-two thousand, one hundred thirteen".