121100939 has 2 divisors, whose sum is σ = 121100940. Its totient is φ = 121100938.

The previous prime is 121100933. The next prime is 121101011. The reversal of 121100939 is 939001121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121100939 - 2⁴ = 121100923 is a prime.

It is not a weakly prime, because it can be changed into another prime (121100933) 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, 60550469 + 60550470.

It is an arithmetic number, because the mean of its divisors is an integer number (60550470).

Almost surely, 2^121100939 is an apocalyptic number.

121100939 is a deficient number, since it is larger than the sum of its proper divisors (1).

121100939 is an equidigital number, since it uses as much as digits as its factorization.

121100939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 121100939 is about 11004.5871798991. The cubic root of 121100939 is about 494.7462413932.

The spelling of 121100939 in words is "one hundred twenty-one million, one hundred thousand, nine hundred thirty-nine".