121027399 has 2 divisors, whose sum is σ = 121027400. Its totient is φ = 121027398.

The previous prime is 121027373. The next prime is 121027427. The reversal of 121027399 is 993720121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121027399 - 2⁷ = 121027271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121027099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60513699 + 60513700.

It is an arithmetic number, because the mean of its divisors is an integer number (60513700).

Almost surely, 2^121027399 is an apocalyptic number.

121027399 is a deficient number, since it is larger than the sum of its proper divisors (1).

121027399 is an equidigital number, since it uses as much as digits as its factorization.

121027399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 121027399 is about 11001.2453385969. The cubic root of 121027399 is about 494.6460742484.

The spelling of 121027399 in words is "one hundred twenty-one million, twenty-seven thousand, three hundred ninety-nine".