12231105637 has 2 divisors, whose sum is σ = 12231105638. Its totient is φ = 12231105636.

The previous prime is 12231105599. The next prime is 12231105641. The reversal of 12231105637 is 73650113221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11749259236 + 481846401 = 108394^2 + 21951^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12231105637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12231105599 and 12231105608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12231105647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115552818 + 6115552819.

It is an arithmetic number, because the mean of its divisors is an integer number (6115552819).

Almost surely, 2^12231105637 is an apocalyptic number.

It is an amenable number.

12231105637 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231105637 is an equidigital number, since it uses as much as digits as its factorization.

12231105637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

Adding to 12231105637 its reverse (73650113221), we get a palindrome (85881218858).

The spelling of 12231105637 in words is "twelve billion, two hundred thirty-one million, one hundred five thousand, six hundred thirty-seven".