12310310320221 has 4 divisors (see below), whose sum is σ = 16413747093632. Its totient is φ = 8206873546812.

The previous prime is 12310310320211. The next prime is 12310310320237. The reversal of 12310310320221 is 12202301301321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12310310320221 - 2⁷ = 12310310320093 is a prime.

It is a super-2 number, since 2×12310310320221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310310320211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2051718386701 + ... + 2051718386706.

It is an arithmetic number, because the mean of its divisors is an integer number (4103436773408).

Almost surely, 2^{12310310320221} is an apocalyptic number.

It is an amenable number.

12310310320221 is a deficient number, since it is larger than the sum of its proper divisors (4103436773411).

12310310320221 is an equidigital number, since it uses as much as digits as its factorization.

12310310320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4103436773410.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12310310320221 its reverse (12202301301321), we get a palindrome (24512611621542).

The spelling of 12310310320221 in words is "twelve trillion, three hundred ten billion, three hundred ten million, three hundred twenty thousand, two hundred twenty-one".