2110122221 has 4 divisors (see below), whose sum is σ = 2114641152. Its totient is φ = 2105603292.

The previous prime is 2110122151. The next prime is 2110122227. The reversal of 2110122221 is 1222210112.

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 2110122221 - 2¹⁰ = 2110121197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2110122196 and 2110122205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110122227) 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, 2258765 + ... + 2259698.

It is an arithmetic number, because the mean of its divisors is an integer number (528660288).

Almost surely, 2^2110122221 is an apocalyptic number.

It is an amenable number.

2110122221 is a deficient number, since it is larger than the sum of its proper divisors (4518931).

2110122221 is an equidigital number, since it uses as much as digits as its factorization.

2110122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4518930.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2110122221 is about 45936.0666687952. The cubic root of 2110122221 is about 1282.6333767889.

Adding to 2110122221 its reverse (1222210112), we get a palindrome (3332332333).

The spelling of 2110122221 in words is "two billion, one hundred ten million, one hundred twenty-two thousand, two hundred twenty-one".