12231221323037 has 2 divisors, whose sum is σ = 12231221323038. Its totient is φ = 12231221323036.

The previous prime is 12231221322857. The next prime is 12231221323099. The reversal of 12231221323037 is 73032312213221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11613332571556 + 617888751481 = 3407834^2 + 786059^2 .

It is a cyclic number.

It is not a de Polignac number, because 12231221323037 - 2⁸ = 12231221322781 is a prime.

It is a super-2 number, since 2×12231221323037² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12231221322994 and 12231221323012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12231221323337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115610661518 + 6115610661519.

It is an arithmetic number, because the mean of its divisors is an integer number (6115610661519).

Almost surely, 2^{12231221323037} is an apocalyptic number.

It is an amenable number.

12231221323037 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231221323037 is an equidigital number, since it uses as much as digits as its factorization.

12231221323037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

Adding to 12231221323037 its reverse (73032312213221), we get a palindrome (85263533536258).

The spelling of 12231221323037 in words is "twelve trillion, two hundred thirty-one billion, two hundred twenty-one million, three hundred twenty-three thousand, thirty-seven".