22331223077 has 2 divisors, whose sum is σ = 22331223078. Its totient is φ = 22331223076.

The previous prime is 22331223071. The next prime is 22331223179. The reversal of 22331223077 is 77032213322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15507471841 + 6823751236 = 124529^2 + 82606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22331223077 is a prime.

It is a super-2 number, since 2×22331223077² (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 (22331223071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11165611538 + 11165611539.

It is an arithmetic number, because the mean of its divisors is an integer number (11165611539).

Almost surely, 2^22331223077 is an apocalyptic number.

It is an amenable number.

22331223077 is a deficient number, since it is larger than the sum of its proper divisors (1).

22331223077 is an equidigital number, since it uses as much as digits as its factorization.

22331223077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 32.

Adding to 22331223077 its reverse (77032213322), we get a palindrome (99363436399).

The spelling of 22331223077 in words is "twenty-two billion, three hundred thirty-one million, two hundred twenty-three thousand, seventy-seven".