2222012220 has 48 divisors (see below), whose sum is σ = 6373388448. Its totient is φ = 578083840.

The previous prime is 2222012213. The next prime is 2222012239. The reversal of 2222012220 is 222102222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2222012220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449169 + ... + 454088.

It is an arithmetic number, because the mean of its divisors is an integer number (132778926).

Almost surely, 2^2222012220 is an apocalyptic number.

2222012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222012220 is an abundant number, since it is smaller than the sum of its proper divisors (4151376228).

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

2222012220 is a wasteful number, since it uses less digits than its factorization.

2222012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903310 (or 903308 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2222012220 is about 47138.2246165466. The cubic root of 2222012220 is about 1304.9147725495.

Adding to 2222012220 its reverse (222102222), we get a palindrome (2444114442).

The spelling of 2222012220 in words is "two billion, two hundred twenty-two million, twelve thousand, two hundred twenty".