2112220120 has 32 divisors (see below), whose sum is σ = 5002628400. Its totient is φ = 800419968.

The previous prime is 2112220079. The next prime is 2112220151. The reversal of 2112220120 is 210222112.

It is a happy number.

It is a super-2 number, since 2×2112220120² = 8922947670665628800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2112220120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1388859 + ... + 1390378.

Almost surely, 2^2112220120 is an apocalyptic number.

2112220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112220120 is an abundant number, since it is smaller than the sum of its proper divisors (2890408280).

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

2112220120 is a wasteful number, since it uses less digits than its factorization.

2112220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2779267 (or 2779263 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2112220120 is about 45958.8959832588. The cubic root of 2112220120 is about 1283.0583038373.

Adding to 2112220120 its reverse (210222112), we get a palindrome (2322442232).

The spelling of 2112220120 in words is "two billion, one hundred twelve million, two hundred twenty thousand, one hundred twenty".