121507699 has 2 divisors, whose sum is σ = 121507700. Its totient is φ = 121507698.

The previous prime is 121507691. The next prime is 121507703. The reversal of 121507699 is 996705121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121507699 - 2³ = 121507691 is a prime.

It is equal to p_6922597 and since 121507699 and 6922597 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (121507691) 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, 60753849 + 60753850.

It is an arithmetic number, because the mean of its divisors is an integer number (60753850).

Almost surely, 2^121507699 is an apocalyptic number.

121507699 is a deficient number, since it is larger than the sum of its proper divisors (1).

121507699 is an equidigital number, since it uses as much as digits as its factorization.

121507699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 121507699 is about 11023.0530707241. The cubic root of 121507699 is about 495.2995486515.

The spelling of 121507699 in words is "one hundred twenty-one million, five hundred seven thousand, six hundred ninety-nine".