10221320 has 32 divisors (see below), whose sum is σ = 23742720. Its totient is φ = 3956160.

The previous prime is 10221293. The next prime is 10221347. The reversal of 10221320 is 2312201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10221293) and next prime (10221347).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2882 + ... + 5361.

It is an arithmetic number, because the mean of its divisors is an integer number (741960).

Almost surely, 2^10221320 is an apocalyptic number.

10221320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221320 is an abundant number, since it is smaller than the sum of its proper divisors (13521400).

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

10221320 is a wasteful number, since it uses less digits than its factorization.

10221320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8285 (or 8281 counting only the distinct ones).

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

The square root of 10221320 is about 3197.0799176749. The cubic root of 10221320 is about 217.0212838461.

Adding to 10221320 its reverse (2312201), we get a palindrome (12533521).

The spelling of 10221320 in words is "ten million, two hundred twenty-one thousand, three hundred twenty".