121365253 has 2 divisors, whose sum is σ = 121365254. Its totient is φ = 121365252.

The previous prime is 121365247. The next prime is 121365263. The reversal of 121365253 is 352563121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66945124 + 54420129 = 8182^2 + 7377^2 .

It is a cyclic number.

It is not a de Polignac number, because 121365253 - 2⁹ = 121364741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121365263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60682626 + 60682627.

It is an arithmetic number, because the mean of its divisors is an integer number (60682627).

Almost surely, 2^121365253 is an apocalyptic number.

It is an amenable number.

121365253 is a deficient number, since it is larger than the sum of its proper divisors (1).

121365253 is an equidigital number, since it uses as much as digits as its factorization.

121365253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 28.

The square root of 121365253 is about 11016.5898988752. The cubic root of 121365253 is about 495.1059229842.

It can be divided in two parts, 1213 and 65253, that added together give a palindrome (66466).

The spelling of 121365253 in words is "one hundred twenty-one million, three hundred sixty-five thousand, two hundred fifty-three".