121427099 has 2 divisors, whose sum is σ = 121427100. Its totient is φ = 121427098.

The previous prime is 121427087. The next prime is 121427101. The reversal of 121427099 is 990724121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121427099 - 2¹⁶ = 121361563 is a prime.

Together with 121427101, 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 (121427069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60713549 + 60713550.

It is an arithmetic number, because the mean of its divisors is an integer number (60713550).

Almost surely, 2^121427099 is an apocalyptic number.

121427099 is a deficient number, since it is larger than the sum of its proper divisors (1).

121427099 is an equidigital number, since it uses as much as digits as its factorization.

121427099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 121427099 is about 11019.3964898265. The cubic root of 121427099 is about 495.1900083392.

The spelling of 121427099 in words is "one hundred twenty-one million, four hundred twenty-seven thousand, ninety-nine".