210002120211999 has 4 divisors (see below), whose sum is σ = 280002826949336. Its totient is φ = 140001413474664.

The previous prime is 210002120211953. The next prime is 210002120212039. The reversal of 210002120211999 is 999112021200012.

It is a happy number.

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

It is not a de Polignac number, because 210002120211999 - 2⁸ = 210002120211743 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 (210002120211199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35000353368664 + ... + 35000353368669.

It is an arithmetic number, because the mean of its divisors is an integer number (70000706737334).

Almost surely, 2^{210002120211999} is an apocalyptic number.

210002120211999 is a deficient number, since it is larger than the sum of its proper divisors (70000706737337).

210002120211999 is an equidigital number, since it uses as much as digits as its factorization.

210002120211999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70000706737336.

The product of its (nonzero) digits is 11664, while the sum is 39.

The spelling of 210002120211999 in words is "two hundred ten trillion, two billion, one hundred twenty million, two hundred eleven thousand, nine hundred ninety-nine".