22001231117 has 2 divisors, whose sum is σ = 22001231118. Its totient is φ = 22001231116.

The previous prime is 22001231111. The next prime is 22001231159. The reversal of 22001231117 is 71113210022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15945123076 + 6056108041 = 126274^2 + 77821^2 .

It is a cyclic number.

It is not a de Polignac number, because 22001231117 - 2²⁰ = 22000182541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22001231111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000615558 + 11000615559.

It is an arithmetic number, because the mean of its divisors is an integer number (11000615559).

Almost surely, 2^22001231117 is an apocalyptic number.

It is an amenable number.

22001231117 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001231117 is an equidigital number, since it uses as much as digits as its factorization.

22001231117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 22001231117 its reverse (71113210022), we get a palindrome (93114441139).

The spelling of 22001231117 in words is "twenty-two billion, one million, two hundred thirty-one thousand, one hundred seventeen".