12230322221 has 16 divisors (see below), whose sum is σ = 13700646960. Its totient is φ = 10839951360.

The previous prime is 12230322193. The next prime is 12230322227. The reversal of 12230322221 is 12222303221.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1860973321 + 10369348900 = 43139^2 + 101830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12230322221 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12230322193 and 12230322202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12230322227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21380 + ... + 157853.

It is an arithmetic number, because the mean of its divisors is an integer number (856290435).

Almost surely, 2^12230322221 is an apocalyptic number.

It is an amenable number.

12230322221 is a deficient number, since it is larger than the sum of its proper divisors (1470324739).

12230322221 is a wasteful number, since it uses less digits than its factorization.

12230322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179456.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12230322221 its reverse (12222303221), we get a palindrome (24452625442).

The spelling of 12230322221 in words is "twelve billion, two hundred thirty million, three hundred twenty-two thousand, two hundred twenty-one".