12230132021221 has 8 divisors (see below), whose sum is σ = 12484908212600. Its totient is φ = 11977106869440.

The previous prime is 12230132021183. The next prime is 12230132021227. The reversal of 12230132021221 is 12212023103221.

It can be written as a sum of positive squares in 4 ways, for example, as 816106264996 + 11414025756225 = 903386^2 + 3378465^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12230132021221 - 2⁹ = 12230132020709 is a prime.

It is a super-2 number, since 2×12230132021221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12230132021192 and 12230132021201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12230132021227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437745786 + ... + 437773723.

It is an arithmetic number, because the mean of its divisors is an integer number (1560613526575).

Almost surely, 2^{12230132021221} is an apocalyptic number.

It is an amenable number.

12230132021221 is a deficient number, since it is larger than the sum of its proper divisors (254776191379).

12230132021221 is an equidigital number, since it uses as much as digits as its factorization.

12230132021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875519799.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 12230132021221 its reverse (12212023103221), we get a palindrome (24442155124442).

The spelling of 12230132021221 in words is "twelve trillion, two hundred thirty billion, one hundred thirty-two million, twenty-one thousand, two hundred twenty-one".