12223242181 has 2 divisors, whose sum is σ = 12223242182. Its totient is φ = 12223242180.

The previous prime is 12223242071. The next prime is 12223242191. The reversal of 12223242181 is 18124232221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7058520225 + 5164721956 = 84015^2 + 71866^2 .

It is a cyclic number.

It is not a de Polignac number, because 12223242181 - 2¹³ = 12223233989 is a prime.

It is a super-2 number, since 2×12223242181² (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 (12223242191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111621090 + 6111621091.

It is an arithmetic number, because the mean of its divisors is an integer number (6111621091).

Almost surely, 2^12223242181 is an apocalyptic number.

It is an amenable number.

12223242181 is a deficient number, since it is larger than the sum of its proper divisors (1).

12223242181 is an equidigital number, since it uses as much as digits as its factorization.

12223242181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 28.

The spelling of 12223242181 in words is "twelve billion, two hundred twenty-three million, two hundred forty-two thousand, one hundred eighty-one".