210110210111221 has 8 divisors (see below), whose sum is σ = 240133205076480. Its totient is φ = 180089027811888.

The previous prime is 210110210111171. The next prime is 210110210111251. The reversal of 210110210111221 is 122111012011012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210110210111221 - 2⁷ = 210110210111093 is a prime.

It is a super-2 number, since 2×210110210111221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210110210111195 and 210110210111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210110210111251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452918086 + ... + 453381751.

It is an arithmetic number, because the mean of its divisors is an integer number (30016650634560).

Almost surely, 2^{210110210111221} is an apocalyptic number.

It is an amenable number.

210110210111221 is a deficient number, since it is larger than the sum of its proper divisors (30022994965259).

210110210111221 is an equidigital number, since it uses as much as digits as its factorization.

210110210111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906332963.

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

Adding to 210110210111221 its reverse (122111012011012), we get a palindrome (332221222122233).

The spelling of 210110210111221 in words is "two hundred ten trillion, one hundred ten billion, two hundred ten million, one hundred eleven thousand, two hundred twenty-one".