22123100009 has 2 divisors, whose sum is σ = 22123100010. Its totient is φ = 22123100008.

The previous prime is 22123099979. The next prime is 22123100033. The reversal of 22123100009 is 90000132122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20504808025 + 1618291984 = 143195^2 + 40228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22123100009 is a prime.

It is not a weakly prime, because it can be changed into another prime (22123102009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061550004 + 11061550005.

It is an arithmetic number, because the mean of its divisors is an integer number (11061550005).

Almost surely, 2^22123100009 is an apocalyptic number.

It is an amenable number.

22123100009 is a deficient number, since it is larger than the sum of its proper divisors (1).

22123100009 is an equidigital number, since it uses as much as digits as its factorization.

22123100009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The spelling of 22123100009 in words is "twenty-two billion, one hundred twenty-three million, one hundred thousand, nine".