2220112121 has 4 divisors (see below), whose sum is σ = 2257741200. Its totient is φ = 2182483044.

The previous prime is 2220112087. The next prime is 2220112159. The reversal of 2220112121 is 1212110222.

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 2220112121 - 2²⁶ = 2153003257 is a prime.

It is a super-2 number, since 2×2220112121² = 9857795659622237282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2220112096 and 2220112105.

It is not an unprimeable number, because it can be changed into a prime (2220112021) 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, 18814451 + ... + 18814568.

It is an arithmetic number, because the mean of its divisors is an integer number (564435300).

Almost surely, 2^2220112121 is an apocalyptic number.

It is an amenable number.

2220112121 is a deficient number, since it is larger than the sum of its proper divisors (37629079).

2220112121 is an equidigital number, since it uses as much as digits as its factorization.

2220112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37629078.

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

The square root of 2220112121 is about 47118.0657603854. The cubic root of 2220112121 is about 1304.5427112380.

Adding to 2220112121 its reverse (1212110222), we get a palindrome (3432222343).

The spelling of 2220112121 in words is "two billion, two hundred twenty million, one hundred twelve thousand, one hundred twenty-one".