2220000012 has 36 divisors (see below), whose sum is σ = 5941766376. Its totient is φ = 696470400.

The previous prime is 2219999989. The next prime is 2220000031. The reversal of 2220000012 is 2100000222.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2219999949 and 2220000003.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1813114 + ... + 1814337.

It is an arithmetic number, because the mean of its divisors is an integer number (165049066).

Almost surely, 2^2220000012 is an apocalyptic number.

It is an amenable number.

2220000012 is an abundant number, since it is smaller than the sum of its proper divisors (3721766364).

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

2220000012 is a wasteful number, since it uses less digits than its factorization.

2220000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3627478 (or 3627473 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2220000012 is about 47116.8760849019. The cubic root of 2220000012 is about 1304.5207523709.

Adding to 2220000012 its reverse (2100000222), we get a palindrome (4320000234).

The spelling of 2220000012 in words is "two billion, two hundred twenty million, twelve", and thus it is an aban number.