2113220 has 24 divisors (see below), whose sum is σ = 4472664. Its totient is φ = 838656.

The previous prime is 2113211. The next prime is 2113229. The reversal of 2113220 is 223112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2113211) and next prime (2113229).

It can be written as a sum of positive squares in 4 ways, for example, as 33856 + 2079364 = 184^2 + 1442^2 .

It is not an unprimeable number, because it can be changed into a prime (2113229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2804 + ... + 3476.

It is an arithmetic number, because the mean of its divisors is an integer number (186361).

2^2113220 is an apocalyptic number.

2113220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2113220 is an abundant number, since it is smaller than the sum of its proper divisors (2359444).

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

2113220 is a wasteful number, since it uses less digits than its factorization.

2113220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2113220 is about 1453.6918518035. The cubic root of 2113220 is about 128.3260729387.

Adding to 2113220 its reverse (223112), we get a palindrome (2336332).

The spelling of 2113220 in words is "two million, one hundred thirteen thousand, two hundred twenty".