121919299 has 2 divisors, whose sum is σ = 121919300. Its totient is φ = 121919298.

The previous prime is 121919279. The next prime is 121919309. The reversal of 121919299 is 992919121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121919299 - 2⁵ = 121919267 is a prime.

It is not a weakly prime, because it can be changed into another prime (121919209) 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, 60959649 + 60959650.

It is an arithmetic number, because the mean of its divisors is an integer number (60959650).

Almost surely, 2^121919299 is an apocalyptic number.

121919299 is a deficient number, since it is larger than the sum of its proper divisors (1).

121919299 is an equidigital number, since it uses as much as digits as its factorization.

121919299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 43.

The square root of 121919299 is about 11041.7072502399. The cubic root of 121919299 is about 495.8581841243.

The spelling of 121919299 in words is "one hundred twenty-one million, nine hundred nineteen thousand, two hundred ninety-nine".