210021201299999 has 4 divisors (see below), whose sum is σ = 210705309447864. Its totient is φ = 209337093152136.

The previous prime is 210021201299929. The next prime is 210021201300011. The reversal of 210021201299999 is 999992102120012.

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

It is a cyclic number.

It is not a de Polignac number, because 210021201299999 - 2²⁴ = 210021184522783 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 (210021201299929) 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, 342054073472 + ... + 342054074085.

It is an arithmetic number, because the mean of its divisors is an integer number (52676327361966).

Almost surely, 2^{210021201299999} is an apocalyptic number.

210021201299999 is a deficient number, since it is larger than the sum of its proper divisors (684108147865).

210021201299999 is an equidigital number, since it uses as much as digits as its factorization.

210021201299999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684108147864.

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

The spelling of 210021201299999 in words is "two hundred ten trillion, twenty-one billion, two hundred one million, two hundred ninety-nine thousand, nine hundred ninety-nine".