2222501220 has 192 divisors, whose sum is σ = 7172444160. Its totient is φ = 570962304.

The previous prime is 2222501213. The next prime is 2222501257. The reversal of 2222501220 is 221052222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2222501193 and 2222501202.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1699807 + ... + 1701113.

It is an arithmetic number, because the mean of its divisors is an integer number (37356480).

Almost surely, 2^2222501220 is an apocalyptic number.

2222501220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2222501220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3586222080).

2222501220 is an abundant number, since it is smaller than the sum of its proper divisors (4949942940).

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

2222501220 is a wasteful number, since it uses less digits than its factorization.

2222501220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439 (or 1431 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2222501220 is about 47143.4112045363. The cubic root of 2222501220 is about 1305.0104900729.

Adding to 2222501220 its reverse (221052222), we get a palindrome (2443553442).

The spelling of 2222501220 in words is "two billion, two hundred twenty-two million, five hundred one thousand, two hundred twenty".