202110210000221 has 16 divisors (see below), whose sum is σ = 207001731202560. Its totient is φ = 197285430619200.

The previous prime is 202110210000191. The next prime is 202110210000229. The reversal of 202110210000221 is 122000012011202.

It is a cyclic number.

It is not a de Polignac number, because 202110210000221 - 2¹⁰ = 202110209999197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202110210000196 and 202110210000205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202110210000229) 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, 21151070 + ... + 29181983.

It is an arithmetic number, because the mean of its divisors is an integer number (12937608200160).

Almost surely, 2^{202110210000221} is an apocalyptic number.

It is an amenable number.

202110210000221 is a deficient number, since it is larger than the sum of its proper divisors (4891521202339).

202110210000221 is a wasteful number, since it uses less digits than its factorization.

202110210000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50333716.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202110210000221 its reverse (122000012011202), we get a palindrome (324110222011423).

The spelling of 202110210000221 in words is "two hundred two trillion, one hundred ten billion, two hundred ten million, two hundred twenty-one", and thus it is an aban number.