2110221121 has 4 divisors (see below), whose sum is σ = 2110320432. Its totient is φ = 2110121812.

The previous prime is 2110221109. The next prime is 2110221167. The reversal of 2110221121 is 1211220112.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2110221121 - 2¹⁹ = 2109696833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2110221821) 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, 3451 + ... + 65056.

It is an arithmetic number, because the mean of its divisors is an integer number (527580108).

Almost surely, 2^2110221121 is an apocalyptic number.

It is an amenable number.

2110221121 is a deficient number, since it is larger than the sum of its proper divisors (99311).

2110221121 is an equidigital number, since it uses as much as digits as its factorization.

2110221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99310.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2110221121 is about 45937.1431523555. The cubic root of 2110221121 is about 1282.6534151952.

Adding to 2110221121 its reverse (1211220112), we get a palindrome (3321441233).

The spelling of 2110221121 in words is "two billion, one hundred ten million, two hundred twenty-one thousand, one hundred twenty-one".