121155299 has 2 divisors, whose sum is σ = 121155300. Its totient is φ = 121155298.

The previous prime is 121155289. The next prime is 121155313. The reversal of 121155299 is 992551121.

It is a weak prime.

It is an emirp because it is prime and its reverse (992551121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121155299 - 2⁸ = 121155043 is a prime.

It is not a weakly prime, because it can be changed into another prime (121155239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60577649 + 60577650.

It is an arithmetic number, because the mean of its divisors is an integer number (60577650).

Almost surely, 2^121155299 is an apocalyptic number.

121155299 is a deficient number, since it is larger than the sum of its proper divisors (1).

121155299 is an equidigital number, since it uses as much as digits as its factorization.

121155299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 35.

The square root of 121155299 is about 11007.0567819013. The cubic root of 121155299 is about 494.8202578370.

The spelling of 121155299 in words is "one hundred twenty-one million, one hundred fifty-five thousand, two hundred ninety-nine".