2133220 has 12 divisors (see below), whose sum is σ = 4479804. Its totient is φ = 853280.

The previous prime is 2133217. The next prime is 2133251. The reversal of 2133220 is 223312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1290496 + 842724 = 1136^2 + 918^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2133220.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53311 + ... + 53350.

It is an arithmetic number, because the mean of its divisors is an integer number (373317).

2^2133220 is an apocalyptic number.

2133220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2133220 is an abundant number, since it is smaller than the sum of its proper divisors (2346584).

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

2133220 is a wasteful number, since it uses less digits than its factorization.

2133220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106670 (or 106668 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 2133220 is about 1460.5546891507. The cubic root of 2133220 is about 128.7296382793.

Adding to 2133220 its reverse (223312), we get a palindrome (2356532).

The spelling of 2133220 in words is "two million, one hundred thirty-three thousand, two hundred twenty".