121913253 has 96 divisors (see below), whose sum is σ = 237219840. Its totient is φ = 58423680.

The previous prime is 121913251. The next prime is 121913263. The reversal of 121913253 is 352319121.

It is not a de Polignac number, because 121913253 - 2¹ = 121913251 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 (121913251) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 618751 + ... + 618947.

It is an arithmetic number, because the mean of its divisors is an integer number (2471040).

Almost surely, 2^121913253 is an apocalyptic number.

It is an amenable number.

121913253 is a deficient number, since it is larger than the sum of its proper divisors (115306587).

121913253 is a wasteful number, since it uses less digits than its factorization.

121913253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 284 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 121913253 is about 11041.4334667198. The cubic root of 121913253 is about 495.8499874233.

The spelling of 121913253 in words is "one hundred twenty-one million, nine hundred thirteen thousand, two hundred fifty-three".