10636221 has 4 divisors (see below), whose sum is σ = 14181632. Its totient is φ = 7090812.

The previous prime is 10636211. The next prime is 10636231. The reversal of 10636221 is 12263601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (10636211) and next prime (10636231).

It is not a de Polignac number, because 10636221 - 2¹⁰ = 10635197 is a prime.

It is a super-2 number, since 2×10636221² = 226258394321682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10636211) 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, 1772701 + ... + 1772706.

It is an arithmetic number, because the mean of its divisors is an integer number (3545408).

Almost surely, 2^10636221 is an apocalyptic number.

It is an amenable number.

10636221 is a deficient number, since it is larger than the sum of its proper divisors (3545411).

10636221 is an equidigital number, since it uses as much as digits as its factorization.

10636221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3545410.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 10636221 is about 3261.3219712258. The cubic root of 10636221 is about 219.9188474790.

Adding to 10636221 its reverse (12263601), we get a palindrome (22899822).

The spelling of 10636221 in words is "ten million, six hundred thirty-six thousand, two hundred twenty-one".