121935019 has 2 divisors, whose sum is σ = 121935020. Its totient is φ = 121935018.

The previous prime is 121935013. The next prime is 121935041. The reversal of 121935019 is 910539121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121935019 - 2⁹ = 121934507 is a prime.

It is a super-2 number, since 2×121935019² = 29736297717060722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121935013) 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, 60967509 + 60967510.

It is an arithmetic number, because the mean of its divisors is an integer number (60967510).

Almost surely, 2^121935019 is an apocalyptic number.

121935019 is a deficient number, since it is larger than the sum of its proper divisors (1).

121935019 is an equidigital number, since it uses as much as digits as its factorization.

121935019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 121935019 is about 11042.4190737356. The cubic root of 121935019 is about 495.8794948212.

The spelling of 121935019 in words is "one hundred twenty-one million, nine hundred thirty-five thousand, nineteen".