10221204 has 36 divisors (see below), whose sum is σ = 27744864. Its totient is φ = 2920176.

The previous prime is 10221203. The next prime is 10221247. The reversal of 10221204 is 40212201.

It is a super-2 number, since 2×10221204² = 208946022419232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 10221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8104 + ... + 9279.

Almost surely, 2^10221204 is an apocalyptic number.

10221204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

10221204 is an abundant number, since it is smaller than the sum of its proper divisors (17523660).

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

10221204 is a wasteful number, since it uses less digits than its factorization.

10221204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17404 (or 17395 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 10221204 is about 3197.0617760688. The cubic root of 10221204 is about 217.0204628639.

Adding to 10221204 its reverse (40212201), we get a palindrome (50433405).

The spelling of 10221204 in words is "ten million, two hundred twenty-one thousand, two hundred four".