22101495809 has 2 divisors, whose sum is σ = 22101495810. Its totient is φ = 22101495808.

The previous prime is 22101495781. The next prime is 22101495811. The reversal of 22101495809 is 90859410122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22001195584 + 100300225 = 148328^2 + 10015^2 .

It is a cyclic number.

It is not a de Polignac number, because 22101495809 - 2²⁰ = 22100447233 is a prime.

It is a super-2 number, since 2×22101495809² (a number of 21 digits) contains 22 as substring.

Together with 22101495811, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22101495839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050747904 + 11050747905.

It is an arithmetic number, because the mean of its divisors is an integer number (11050747905).

Almost surely, 2^22101495809 is an apocalyptic number.

It is an amenable number.

22101495809 is a deficient number, since it is larger than the sum of its proper divisors (1).

22101495809 is an equidigital number, since it uses as much as digits as its factorization.

22101495809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 22101495809 in words is "twenty-two billion, one hundred one million, four hundred ninety-five thousand, eight hundred nine".