210110102221221 has 16 divisors (see below), whose sum is σ = 311274453131200. Its totient is φ = 140073299052624.

The previous prime is 210110102221177. The next prime is 210110102221231. The reversal of 210110102221221 is 122122201011012.

210110102221221 is a `hidden beast` number, since 2 + 10 + 110 + 102 + 221 + 221 = 666.

It is not a de Polignac number, because 210110102221221 - 2³⁴ = 210092922352037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210110102221194 and 210110102221203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210110102221231) 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, 60001815 + ... + 63406923.

It is an arithmetic number, because the mean of its divisors is an integer number (19454653320700).

Almost surely, 2^{210110102221221} is an apocalyptic number.

It is an amenable number.

210110102221221 is a deficient number, since it is larger than the sum of its proper divisors (101164350909979).

210110102221221 is a wasteful number, since it uses less digits than its factorization.

210110102221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5690465 (or 5690459 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210110102221221 its reverse (122122201011012), we get a palindrome (332232303232233).

The spelling of 210110102221221 in words is "two hundred ten trillion, one hundred ten billion, one hundred two million, two hundred twenty-one thousand, two hundred twenty-one".