22012230997 has 2 divisors, whose sum is σ = 22012230998. Its totient is φ = 22012230996.

The previous prime is 22012230991. The next prime is 22012231009. The reversal of 22012230997 is 79903221022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21825334756 + 186896241 = 147734^2 + 13671^2 .

It is a cyclic number.

It is not a de Polignac number, because 22012230997 - 2⁷ = 22012230869 is a prime.

It is a super-2 number, since 2×22012230997² (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 (22012230991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006115498 + 11006115499.

It is an arithmetic number, because the mean of its divisors is an integer number (11006115499).

Almost surely, 2^22012230997 is an apocalyptic number.

It is an amenable number.

22012230997 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012230997 is an equidigital number, since it uses as much as digits as its factorization.

22012230997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

It can be divided in two parts, 22012 and 230997, that added together give a square (253009 = 503²).

The spelling of 22012230997 in words is "twenty-two billion, twelve million, two hundred thirty thousand, nine hundred ninety-seven".