210221102099999 has 4 divisors (see below), whose sum is σ = 210228441482136. Its totient is φ = 210213762717864.

The previous prime is 210221102099971. The next prime is 210221102100017. The reversal of 210221102099999 is 999990201122012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210221102099999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210221102099599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3669648104 + ... + 3669705389.

It is an arithmetic number, because the mean of its divisors is an integer number (52557110370534).

Almost surely, 2^{210221102099999} is an apocalyptic number.

210221102099999 is a deficient number, since it is larger than the sum of its proper divisors (7339382137).

210221102099999 is an equidigital number, since it uses as much as digits as its factorization.

210221102099999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7339382136.

The product of its (nonzero) digits is 944784, while the sum is 56.

The spelling of 210221102099999 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred two million, ninety-nine thousand, nine hundred ninety-nine".