12204621 has 64 divisors (see below), whose sum is σ = 22176000. Its totient is φ = 6531840.

The previous prime is 12204613. The next prime is 12204629. The reversal of 12204621 is 12640221.

12204621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12204613) and next prime (12204629).

It is not a de Polignac number, because 12204621 - 2³ = 12204613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12204594 and 12204603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12204629) 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 63 ways as a sum of consecutive naturals, for example, 111915 + ... + 112023.

It is an arithmetic number, because the mean of its divisors is an integer number (346500).

Almost surely, 2^12204621 is an apocalyptic number.

12204621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12204621 is a deficient number, since it is larger than the sum of its proper divisors (9971379).

12204621 is a wasteful number, since it uses less digits than its factorization.

12204621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 12204621 is about 3493.5112709135. The cubic root of 12204621 is about 230.2368134285.

Adding to 12204621 its reverse (12640221), we get a palindrome (24844842).

Subtracting 12204621 from its reverse (12640221), we obtain a square (435600 = 660²).

The spelling of 12204621 in words is "twelve million, two hundred four thousand, six hundred twenty-one".