2222111220 has 96 divisors (see below), whose sum is σ = 7302989568. Its totient is φ = 494180352.

The previous prime is 2222111219. The next prime is 2222111239. The reversal of 2222111220 is 221112222.

2222111220 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2222111220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55957 + ... + 87036.

It is an arithmetic number, because the mean of its divisors is an integer number (76072808).

Almost surely, 2^2222111220 is an apocalyptic number.

2222111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222111220 is an abundant number, since it is smaller than the sum of its proper divisors (5080878348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2222111220 is a wasteful number, since it uses less digits than its factorization.

2222111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143049 (or 143047 counting only the distinct ones).

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

The square root of 2222111220 is about 47139.2747080394. The cubic root of 2222111220 is about 1304.9341520774.

Adding to 2222111220 its reverse (221112222), we get a palindrome (2443223442).

It can be divided in two parts, 2 and 222111220, that added together give a palindrome (222111222).

The spelling of 2222111220 in words is "two billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty".