121000120111999 has 2 divisors, whose sum is σ = 121000120112000. Its totient is φ = 121000120111998.

The previous prime is 121000120111991. The next prime is 121000120112021. The reversal of 121000120111999 is 999111021000121.

It is a weak prime.

It is an emirp because it is prime and its reverse (999111021000121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121000120111999 - 2³ = 121000120111991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000120111991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500060055999 + 60500060056000.

It is an arithmetic number, because the mean of its divisors is an integer number (60500060056000).

Almost surely, 2^{121000120111999} is an apocalyptic number.

121000120111999 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000120111999 is an equidigital number, since it uses as much as digits as its factorization.

121000120111999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 37.

The spelling of 121000120111999 in words is "one hundred twenty-one trillion, one hundred twenty million, one hundred eleven thousand, nine hundred ninety-nine".