210120210221 has 16 divisors (see below), whose sum is σ = 213741244800. Its totient is φ = 206531160000.

The previous prime is 210120210211. The next prime is 210120210233. The reversal of 210120210221 is 122012021012.

It is a cyclic number.

It is not a de Polignac number, because 210120210221 - 2¹⁴ = 210120193837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210120210196 and 210120210205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210120210211) 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, 31550990 + ... + 31557648.

It is an arithmetic number, because the mean of its divisors is an integer number (13358827800).

Almost surely, 2^210120210221 is an apocalyptic number.

It is an amenable number.

210120210221 is a deficient number, since it is larger than the sum of its proper divisors (3621034579).

210120210221 is a wasteful number, since it uses less digits than its factorization.

210120210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8980.

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

Adding to 210120210221 its reverse (122012021012), we get a palindrome (332132231233).

The spelling of 210120210221 in words is "two hundred ten billion, one hundred twenty million, two hundred ten thousand, two hundred twenty-one".