210221211199999 has 16 divisors (see below), whose sum is σ = 213106204206720. Its totient is φ = 207358614571680.

The previous prime is 210221211199963. The next prime is 210221211200027. The reversal of 210221211199999 is 999991112122012.

It is a cyclic number.

It is not a de Polignac number, because 210221211199999 - 2¹⁷ = 210221211068927 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 (210221211196999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12462592 + ... + 23994970.

It is an arithmetic number, because the mean of its divisors is an integer number (13319137762920).

Almost surely, 2^{210221211199999} is an apocalyptic number.

210221211199999 is a deficient number, since it is larger than the sum of its proper divisors (2884993006721).

210221211199999 is a wasteful number, since it uses less digits than its factorization.

210221211199999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11533350.

The product of its (nonzero) digits is 944784, while the sum is 58.

The spelling of 210221211199999 in words is "two hundred ten trillion, two hundred twenty-one billion, two hundred eleven million, one hundred ninety-nine thousand, nine hundred ninety-nine".