121253399 has 2 divisors, whose sum is σ = 121253400. Its totient is φ = 121253398.

The previous prime is 121253393. The next prime is 121253411. The reversal of 121253399 is 993352121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121253399 - 2¹⁶ = 121187863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121253393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60626699 + 60626700.

It is an arithmetic number, because the mean of its divisors is an integer number (60626700).

Almost surely, 2^121253399 is an apocalyptic number.

121253399 is a deficient number, since it is larger than the sum of its proper divisors (1).

121253399 is an equidigital number, since it uses as much as digits as its factorization.

121253399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 35.

The square root of 121253399 is about 11011.5121123304. The cubic root of 121253399 is about 494.9537745495.

The spelling of 121253399 in words is "one hundred twenty-one million, two hundred fifty-three thousand, three hundred ninety-nine".