2220112221 has 16 divisors (see below), whose sum is σ = 3041549184. Its totient is φ = 1439411904.

The previous prime is 2220112217. The next prime is 2220112241. The reversal of 2220112221 is 1222110222.

It is not a de Polignac number, because 2220112221 - 2² = 2220112217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2220112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220112211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392016 + ... + 397638.

It is an arithmetic number, because the mean of its divisors is an integer number (190096824).

Almost surely, 2^2220112221 is an apocalyptic number.

It is an amenable number.

2220112221 is a deficient number, since it is larger than the sum of its proper divisors (821436963).

2220112221 is a wasteful number, since it uses less digits than its factorization.

2220112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9220.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2220112221 is about 47118.0668215495. The cubic root of 2220112221 is about 1304.5427308247.

Adding to 2220112221 its reverse (1222110222), we get a palindrome (3442222443).

The spelling of 2220112221 in words is "two billion, two hundred twenty million, one hundred twelve thousand, two hundred twenty-one".