121307253 has 4 divisors (see below), whose sum is σ = 161743008. Its totient is φ = 80871500.

The previous prime is 121307227. The next prime is 121307269. The reversal of 121307253 is 352703121.

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.

It is a cyclic number.

It is not a de Polignac number, because 121307253 - 2¹⁸ = 121045109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121307273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20217873 + ... + 20217878.

It is an arithmetic number, because the mean of its divisors is an integer number (40435752).

Almost surely, 2^121307253 is an apocalyptic number.

It is an amenable number.

121307253 is a deficient number, since it is larger than the sum of its proper divisors (40435755).

121307253 is an equidigital number, since it uses as much as digits as its factorization.

121307253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40435754.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 121307253 is about 11013.9571907648. The cubic root of 121307253 is about 495.0270406614.

The spelling of 121307253 in words is "one hundred twenty-one million, three hundred seven thousand, two hundred fifty-three".