2201222220 has 48 divisors (see below), whose sum is σ = 6525979488. Its totient is φ = 552463360.

The previous prime is 2201222207. The next prime is 2201222251. The reversal of 2201222220 is 222221022.

2201222220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2201222220.

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, 1078011 + ... + 1080050.

It is an arithmetic number, because the mean of its divisors is an integer number (135957906).

Almost surely, 2^2201222220 is an apocalyptic number.

2201222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2201222220 is an abundant number, since it is smaller than the sum of its proper divisors (4324757268).

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

2201222220 is a wasteful number, since it uses less digits than its factorization.

2201222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158090 (or 2158088 counting only the distinct ones).

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

The square root of 2201222220 is about 46917.1846981466. The cubic root of 2201222220 is about 1300.8322520934.

Adding to 2201222220 its reverse (222221022), we get a palindrome (2423443242).

The spelling of 2201222220 in words is "two billion, two hundred one million, two hundred twenty-two thousand, two hundred twenty".