10821227 has 4 divisors (see below), whose sum is σ = 10836000. Its totient is φ = 10806456.

The previous prime is 10821221. The next prime is 10821229. The reversal of 10821227 is 72212801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10821227 - 2¹⁰ = 10820203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10821221) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6227 + ... + 7772.

It is an arithmetic number, because the mean of its divisors is an integer number (2709000).

Almost surely, 2^10821227 is an apocalyptic number.

10821227 is a deficient number, since it is larger than the sum of its proper divisors (14773).

10821227 is an equidigital number, since it uses as much as digits as its factorization.

10821227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14772.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 10821227 is about 3289.5633448833. The cubic root of 10821227 is about 221.1866116940.

The spelling of 10821227 in words is "ten million, eight hundred twenty-one thousand, two hundred twenty-seven".