121683253 has 2 divisors, whose sum is σ = 121683254. Its totient is φ = 121683252.

The previous prime is 121683187. The next prime is 121683257. The reversal of 121683253 is 352386121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79602084 + 42081169 = 8922^2 + 6487^2 .

It is an emirp because it is prime and its reverse (352386121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121683253 - 2⁹ = 121682741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121683257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60841626 + 60841627.

It is an arithmetic number, because the mean of its divisors is an integer number (60841627).

Almost surely, 2^121683253 is an apocalyptic number.

It is an amenable number.

121683253 is a deficient number, since it is larger than the sum of its proper divisors (1).

121683253 is an equidigital number, since it uses as much as digits as its factorization.

121683253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 121683253 is about 11031.0132354195. The cubic root of 121683253 is about 495.5379696880.

The spelling of 121683253 in words is "one hundred twenty-one million, six hundred eighty-three thousand, two hundred fifty-three".