2201220 has 72 divisors (see below), whose sum is σ = 7635264. Its totient is φ = 502848.

The previous prime is 2201209. The next prime is 2201273. The reversal of 2201220 is 221022.

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

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, 387 + ... + 2133.

2^2201220 is an apocalyptic number.

2201220 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 2201220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3817632).

2201220 is an abundant number, since it is smaller than the sum of its proper divisors (5434044).

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

2201220 is a wasteful number, since it uses less digits than its factorization.

2201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769 (or 1764 counting only the distinct ones).

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

The square root of 2201220 is about 1483.6509023352. The cubic root of 2201220 is about 130.0831814784.

Adding to 2201220 its reverse (221022), we get a palindrome (2422242).

The spelling of 2201220 in words is "two million, two hundred one thousand, two hundred twenty".