210221122199999 has 4 divisors (see below), whose sum is σ = 210380260068240. Its totient is φ = 210061984331760.

The previous prime is 210221122199971. The next prime is 210221122200007. The reversal of 210221122199999 is 999991221122012.

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-210221122199999 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 (210221122199929) 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, 79568932139 + ... + 79568934780.

It is an arithmetic number, because the mean of its divisors is an integer number (52595065017060).

Almost surely, 2^{210221122199999} is an apocalyptic number.

210221122199999 is a deficient number, since it is larger than the sum of its proper divisors (159137868241).

210221122199999 is a wasteful number, since it uses less digits than its factorization.

210221122199999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159137868240.

The product of its (nonzero) digits is 1889568, while the sum is 59.

The spelling of 210221122199999 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred twenty-two million, one hundred ninety-nine thousand, nine hundred ninety-nine".