12303020231221 has 4 divisors (see below), whose sum is σ = 12371752188000. Its totient is φ = 12234288274444.

The previous prime is 12303020231171. The next prime is 12303020231233. The reversal of 12303020231221 is 12213202030321.

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 a cyclic number.

It is not a de Polignac number, because 12303020231221 - 2¹¹ = 12303020229173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12303020231192 and 12303020231201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12303020231251) 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, 34365978121 + ... + 34365978478.

It is an arithmetic number, because the mean of its divisors is an integer number (3092938047000).

Almost surely, 2^{12303020231221} is an apocalyptic number.

It is an amenable number.

12303020231221 is a deficient number, since it is larger than the sum of its proper divisors (68731956779).

12303020231221 is an equidigital number, since it uses as much as digits as its factorization.

12303020231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68731956778.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12303020231221 its reverse (12213202030321), we get a palindrome (24516222261542).

The spelling of 12303020231221 in words is "twelve trillion, three hundred three billion, twenty million, two hundred thirty-one thousand, two hundred twenty-one".