2220211818 has 48 divisors (see below), whose sum is σ = 5291200512. Its totient is φ = 672784200.

The previous prime is 2220211793. The next prime is 2220211823. The reversal of 2220211818 is 8181120222.

2220211818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2220211791 and 2220211800.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22378 + ... + 70293.

It is an arithmetic number, because the mean of its divisors is an integer number (110233344).

Almost surely, 2^2220211818 is an apocalyptic number.

2220211818 is an abundant number, since it is smaller than the sum of its proper divisors (3070988694).

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

2220211818 is a wasteful number, since it uses less digits than its factorization.

2220211818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92712 (or 92687 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 2220211818 is about 47119.1236972845. The cubic root of 2220211818 is about 1304.5622383370.

The spelling of 2220211818 in words is "two billion, two hundred twenty million, two hundred eleven thousand, eight hundred eighteen".