121330999 has 2 divisors, whose sum is σ = 121331000. Its totient is φ = 121330998.

The previous prime is 121330991. The next prime is 121331027. The reversal of 121330999 is 999033121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121330999 - 2³ = 121330991 is a prime.

It is a super-2 number, since 2×121330999² = 29442422636676002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121330991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60665499 + 60665500.

It is an arithmetic number, because the mean of its divisors is an integer number (60665500).

Almost surely, 2^121330999 is an apocalyptic number.

121330999 is a deficient number, since it is larger than the sum of its proper divisors (1).

121330999 is an equidigital number, since it uses as much as digits as its factorization.

121330999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 121330999 is about 11015.0351338523. The cubic root of 121330999 is about 495.0593392115.

The spelling of 121330999 in words is "one hundred twenty-one million, three hundred thirty thousand, nine hundred ninety-nine".