2112220020 has 24 divisors (see below), whose sum is σ = 5914216224. Its totient is φ = 563258656.

The previous prime is 2112219917. The next prime is 2112220031. The reversal of 2112220020 is 200222112.

It is a super-2 number, since 2×2112220020² = 8922946825777600800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2112219978 and 2112220005.

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, 17601774 + ... + 17601893.

It is an arithmetic number, because the mean of its divisors is an integer number (246425676).

Almost surely, 2^2112220020 is an apocalyptic number.

2112220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112220020 is an abundant number, since it is smaller than the sum of its proper divisors (3801996204).

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

2112220020 is a wasteful number, since it uses less digits than its factorization.

2112220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35203679 (or 35203677 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2112220020 is about 45958.8948953301. The cubic root of 2112220020 is about 1283.0582835891.

Adding to 2112220020 its reverse (200222112), we get a palindrome (2312442132).

The spelling of 2112220020 in words is "two billion, one hundred twelve million, two hundred twenty thousand, twenty".