2221112120 has 16 divisors (see below), whose sum is σ = 4997502360. Its totient is φ = 888444832.

The previous prime is 2221112119. The next prime is 2221112123. The reversal of 2221112120 is 212111222.

It is a super-2 number, since 2×2221112120² = 9866678099221788800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2221112095 and 2221112104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221112123) 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, 27763862 + ... + 27763941.

Almost surely, 2^2221112120 is an apocalyptic number.

2221112120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221112120 is an abundant number, since it is smaller than the sum of its proper divisors (2776390240).

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

2221112120 is a wasteful number, since it uses less digits than its factorization.

2221112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55527814 (or 55527810 counting only the distinct ones).

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

The square root of 2221112120 is about 47128.6761961335. The cubic root of 2221112120 is about 1304.7385490332.

Adding to 2221112120 its reverse (212111222), we get a palindrome (2433223342).

The spelling of 2221112120 in words is "two billion, two hundred twenty-one million, one hundred twelve thousand, one hundred twenty".