12231020221 has 8 divisors (see below), whose sum is σ = 14102011584. Its totient is φ = 10390954560.

The previous prime is 12231020183. The next prime is 12231020267. The reversal of 12231020221 is 12202013221.

It is a happy number.

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

It is not a de Polignac number, because 12231020221 - 2¹⁹ = 12230495933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12231020195 and 12231020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231020281) 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, 7730575 + ... + 7732156.

It is an arithmetic number, because the mean of its divisors is an integer number (1762751448).

Almost surely, 2^12231020221 is an apocalyptic number.

It is an amenable number.

12231020221 is a deficient number, since it is larger than the sum of its proper divisors (1870991363).

12231020221 is a wasteful number, since it uses less digits than its factorization.

12231020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15462851.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12231020221 its reverse (12202013221), we get a palindrome (24433033442).

The spelling of 12231020221 in words is "twelve billion, two hundred thirty-one million, twenty thousand, two hundred twenty-one".