210010010210221 has 16 divisors (see below), whose sum is σ = 233051729405040. Its totient is φ = 189127213616640.

The previous prime is 210010010210219. The next prime is 210010010210347. The reversal of 210010010210221 is 122012010010012.

210010010210221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 206653562702500 + 3356447507721 = 14375450^2 + 1832061^2 .

It is not a de Polignac number, because 210010010210221 - 2¹ = 210010010210219 is a prime.

It is a super-2 number, since 2×210010010210221² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210010010210621) 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, 1165634860 + ... + 1165815013.

It is an arithmetic number, because the mean of its divisors is an integer number (14565733087815).

Almost surely, 2^{210010010210221} is an apocalyptic number.

It is an amenable number.

210010010210221 is a deficient number, since it is larger than the sum of its proper divisors (23041719194819).

210010010210221 is an equidigital number, since it uses as much as digits as its factorization.

210010010210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331449953 (or 2331449927 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210010010210221 its reverse (122012010010012), we get a palindrome (332022020220233).

The spelling of 210010010210221 in words is "two hundred ten trillion, ten billion, ten million, two hundred ten thousand, two hundred twenty-one".