12230213221 has 2 divisors, whose sum is σ = 12230213222. Its totient is φ = 12230213220.

The previous prime is 12230213213. The next prime is 12230213243. The reversal of 12230213221 is 12231203221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9648150625 + 2582062596 = 98225^2 + 50814^2 .

It is a cyclic number.

It is not a de Polignac number, because 12230213221 - 2³ = 12230213213 is a prime.

It is a super-2 number, since 2×12230213221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12230213201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115106610 + 6115106611.

It is an arithmetic number, because the mean of its divisors is an integer number (6115106611).

Almost surely, 2^12230213221 is an apocalyptic number.

It is an amenable number.

12230213221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12230213221 is an equidigital number, since it uses as much as digits as its factorization.

12230213221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12230213221 its reverse (12231203221), we get a palindrome (24461416442).

The spelling of 12230213221 in words is "twelve billion, two hundred thirty million, two hundred thirteen thousand, two hundred twenty-one".