121902299 has 2 divisors, whose sum is σ = 121902300. Its totient is φ = 121902298.

The previous prime is 121902289. The next prime is 121902301. The reversal of 121902299 is 992209121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121902299 - 2¹⁶ = 121836763 is a prime.

Together with 121902301, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121902239) 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 as a sum of consecutive naturals, namely, 60951149 + 60951150.

It is an arithmetic number, because the mean of its divisors is an integer number (60951150).

Almost surely, 2^121902299 is an apocalyptic number.

121902299 is a deficient number, since it is larger than the sum of its proper divisors (1).

121902299 is an equidigital number, since it uses as much as digits as its factorization.

121902299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 121902299 is about 11040.9374149118. The cubic root of 121902299 is about 495.8351361436.

It can be divided in two parts, 1219022 and 99, that added together give a palindrome (1219121).

The spelling of 121902299 in words is "one hundred twenty-one million, nine hundred two thousand, two hundred ninety-nine".