2110110220221 has 4 divisors (see below), whose sum is σ = 2813480293632. Its totient is φ = 1406740146812.

The previous prime is 2110110220201. The next prime is 2110110220243. The reversal of 2110110220221 is 1220220110112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2110110220221 - 2⁹ = 2110110219709 is a prime.

It is a super-2 number, since 2×2110110220221² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2110110220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110110220201) 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, 351685036701 + ... + 351685036706.

It is an arithmetic number, because the mean of its divisors is an integer number (703370073408).

Almost surely, 2^{2110110220221} is an apocalyptic number.

It is an amenable number.

2110110220221 is a deficient number, since it is larger than the sum of its proper divisors (703370073411).

2110110220221 is an equidigital number, since it uses as much as digits as its factorization.

2110110220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703370073410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2110110220221 its reverse (1220220110112), we get a palindrome (3330330330333).

The spelling of 2110110220221 in words is "two trillion, one hundred ten billion, one hundred ten million, two hundred twenty thousand, two hundred twenty-one".