210120121199 has 2 divisors, whose sum is σ = 210120121200. Its totient is φ = 210120121198.

The previous prime is 210120121177. The next prime is 210120121241. The reversal of 210120121199 is 991121021012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210120121199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210120121129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060060599 + 105060060600.

It is an arithmetic number, because the mean of its divisors is an integer number (105060060600).

Almost surely, 2^210120121199 is an apocalyptic number.

210120121199 is a deficient number, since it is larger than the sum of its proper divisors (1).

210120121199 is an equidigital number, since it uses as much as digits as its factorization.

210120121199 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 210120121199 in words is "two hundred ten billion, one hundred twenty million, one hundred twenty-one thousand, one hundred ninety-nine".