12302223021 has 24 divisors (see below), whose sum is σ = 19388871840. Its totient is φ = 7454527200.

The previous prime is 12302223013. The next prime is 12302223053. The reversal of 12302223021 is 12032220321.

12302223021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12302223021 - 2³ = 12302223013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12302222985 and 12302223003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12302223421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 893175 + ... + 906843.

It is an arithmetic number, because the mean of its divisors is an integer number (807869660).

Almost surely, 2^12302223021 is an apocalyptic number.

12302223021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12302223021 is a deficient number, since it is larger than the sum of its proper divisors (7086648819).

12302223021 is a wasteful number, since it uses less digits than its factorization.

12302223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22777 (or 22774 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12302223021 its reverse (12032220321), we get a palindrome (24334443342).

The spelling of 12302223021 in words is "twelve billion, three hundred two million, two hundred twenty-three thousand, twenty-one".