12222345637 has 2 divisors, whose sum is σ = 12222345638. Its totient is φ = 12222345636.

The previous prime is 12222345617. The next prime is 12222345683. The reversal of 12222345637 is 73654322221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7123528801 + 5098816836 = 84401^2 + 71406^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222345637 - 2¹⁹ = 12221821349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12222345596 and 12222345605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222345617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111172818 + 6111172819.

It is an arithmetic number, because the mean of its divisors is an integer number (6111172819).

Almost surely, 2^12222345637 is an apocalyptic number.

It is an amenable number.

12222345637 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222345637 is an equidigital number, since it uses as much as digits as its factorization.

12222345637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 37.

Adding to 12222345637 its reverse (73654322221), we get a palindrome (85876667858).

The spelling of 12222345637 in words is "twelve billion, two hundred twenty-two million, three hundred forty-five thousand, six hundred thirty-seven".