121201210199 has 2 divisors, whose sum is σ = 121201210200. Its totient is φ = 121201210198.

The previous prime is 121201210187. The next prime is 121201210213. The reversal of 121201210199 is 991012102121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121201210199 - 2²⁴ = 121184432983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201210139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600605099 + 60600605100.

It is an arithmetic number, because the mean of its divisors is an integer number (60600605100).

Almost surely, 2^121201210199 is an apocalyptic number.

121201210199 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201210199 is an equidigital number, since it uses as much as digits as its factorization.

121201210199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 121201210199 in words is "one hundred twenty-one billion, two hundred one million, two hundred ten thousand, one hundred ninety-nine".