210110201010221 has 4 divisors (see below), whose sum is σ = 210110245949244. Its totient is φ = 210110156071200.

The previous prime is 210110201010139. The next prime is 210110201010233. The reversal of 210110201010221 is 122010102011012.

210110201010221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86948370301321 + 123161830708900 = 9324611^2 + 11097830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210110201010221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210110201010196 and 210110201010205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210110201010121) 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, 14518490 + ... + 25119851.

It is an arithmetic number, because the mean of its divisors is an integer number (52527561487311).

Almost surely, 2^{210110201010221} is an apocalyptic number.

It is an amenable number.

210110201010221 is a deficient number, since it is larger than the sum of its proper divisors (44939023).

210110201010221 is an equidigital number, since it uses as much as digits as its factorization.

210110201010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44939022.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210110201010221 its reverse (122010102011012), we get a palindrome (332120303021233).

The spelling of 210110201010221 in words is "two hundred ten trillion, one hundred ten billion, two hundred one million, ten thousand, two hundred twenty-one".