12310303221 has 24 divisors (see below), whose sum is σ = 18021294720. Its totient is φ = 8096813856.

The previous prime is 12310303193. The next prime is 12310303249. The reversal of 12310303221 is 12230301321.

12310303221 is a `hidden beast` number, since 1 + 2 + 310 + 30 + 322 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (12310303193) and next prime (12310303249).

It is not a de Polignac number, because 12310303221 - 2¹⁰ = 12310302197 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12310303194 and 12310303203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310303261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 224680 + ... + 274046.

It is an arithmetic number, because the mean of its divisors is an integer number (750887280).

Almost surely, 2^12310303221 is an apocalyptic number.

It is an amenable number.

12310303221 is a deficient number, since it is larger than the sum of its proper divisors (5710991499).

12310303221 is a wasteful number, since it uses less digits than its factorization.

12310303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49745 (or 49742 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12310303221 its reverse (12230301321), we get a palindrome (24540604542).

The spelling of 12310303221 in words is "twelve billion, three hundred ten million, three hundred three thousand, two hundred twenty-one".