10213220 has 24 divisors (see below), whose sum is σ = 22188600. Its totient is φ = 3944192.

The previous prime is 10213207. The next prime is 10213253. The reversal of 10213220 is 2231201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2010724 + 8202496 = 1418^2 + 2864^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8225 + ... + 9384.

It is an arithmetic number, because the mean of its divisors is an integer number (924525).

Almost surely, 2^10213220 is an apocalyptic number.

10213220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10213220 is an abundant number, since it is smaller than the sum of its proper divisors (11975380).

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

10213220 is a wasteful number, since it uses less digits than its factorization.

10213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17647 (or 17645 counting only the distinct ones).

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

The square root of 10213220 is about 3195.8128856365. The cubic root of 10213220 is about 216.9639417105.

Adding to 10213220 its reverse (2231201), we get a palindrome (12444421).

The spelling of 10213220 in words is "ten million, two hundred thirteen thousand, two hundred twenty".