210100120120999 has 2 divisors, whose sum is σ = 210100120121000. Its totient is φ = 210100120120998.

The previous prime is 210100120120901. The next prime is 210100120121009. The reversal of 210100120120999 is 999021021001012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210100120120999 - 2⁷ = 210100120120871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210100120127999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105050060060499 + 105050060060500.

It is an arithmetic number, because the mean of its divisors is an integer number (105050060060500).

Almost surely, 2^{210100120120999} is an apocalyptic number.

210100120120999 is a deficient number, since it is larger than the sum of its proper divisors (1).

210100120120999 is an equidigital number, since it uses as much as digits as its factorization.

210100120120999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 37.

The spelling of 210100120120999 in words is "two hundred ten trillion, one hundred billion, one hundred twenty million, one hundred twenty thousand, nine hundred ninety-nine".