22131123717 has 4 divisors (see below), whose sum is σ = 29508164960. Its totient is φ = 14754082476.

The previous prime is 22131123631. The next prime is 22131123793. The reversal of 22131123717 is 71732113122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22131123717 - 2⁸ = 22131123461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131123317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3688520617 + ... + 3688520622.

It is an arithmetic number, because the mean of its divisors is an integer number (7377041240).

Almost surely, 2^22131123717 is an apocalyptic number.

It is an amenable number.

22131123717 is a deficient number, since it is larger than the sum of its proper divisors (7377041243).

22131123717 is an equidigital number, since it uses as much as digits as its factorization.

22131123717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7377041242.

The product of its digits is 3528, while the sum is 30.

Adding to 22131123717 its reverse (71732113122), we get a palindrome (93863236839).

The spelling of 22131123717 in words is "twenty-two billion, one hundred thirty-one million, one hundred twenty-three thousand, seven hundred seventeen".