121112210100199 has 2 divisors, whose sum is σ = 121112210100200. Its totient is φ = 121112210100198.

The previous prime is 121112210100151. The next prime is 121112210100281. The reversal of 121112210100199 is 991001012211121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121112210100199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121112210100199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121112210100109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556105050099 + 60556105050100.

It is an arithmetic number, because the mean of its divisors is an integer number (60556105050100).

Almost surely, 2^{121112210100199} is an apocalyptic number.

121112210100199 is a deficient number, since it is larger than the sum of its proper divisors (1).

121112210100199 is an equidigital number, since it uses as much as digits as its factorization.

121112210100199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 31.

The spelling of 121112210100199 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred ten million, one hundred thousand, one hundred ninety-nine".