10221231 has 16 divisors (see below), whose sum is σ = 14128128. Its totient is φ = 6568800.

The previous prime is 10221203. The next prime is 10221247. The reversal of 10221231 is 13212201.

It is a de Polignac number, because none of the positive numbers 2^k-10221231 is a prime.

It is a super-2 number, since 2×10221231² = 208947126310722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9501 + ... + 10521.

It is an arithmetic number, because the mean of its divisors is an integer number (883008).

Almost surely, 2^10221231 is an apocalyptic number.

10221231 is a deficient number, since it is larger than the sum of its proper divisors (3906897).

10221231 is a wasteful number, since it uses less digits than its factorization.

10221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 10221231 is about 3197.0659986932. The cubic root of 10221231 is about 217.0206539552.

Adding to 10221231 its reverse (13212201), we get a palindrome (23433432).

The spelling of 10221231 in words is "ten million, two hundred twenty-one thousand, two hundred thirty-one".