12232010221 has 4 divisors (see below), whose sum is σ = 12951540252. Its totient is φ = 11512480192.

The previous prime is 12232010191. The next prime is 12232010249. The reversal of 12232010221 is 12201023221.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8627808996 + 3604201225 = 92886^2 + 60035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12232010221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12232010195 and 12232010204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12232010281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359764990 + ... + 359765023.

It is an arithmetic number, because the mean of its divisors is an integer number (3237885063).

Almost surely, 2^12232010221 is an apocalyptic number.

It is an amenable number.

12232010221 is a deficient number, since it is larger than the sum of its proper divisors (719530031).

12232010221 is an equidigital number, since it uses as much as digits as its factorization.

12232010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719530030.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12232010221 its reverse (12201023221), we get a palindrome (24433033442).

The spelling of 12232010221 in words is "twelve billion, two hundred thirty-two million, ten thousand, two hundred twenty-one".