22501244117 has 4 divisors (see below), whose sum is σ = 24546811776. Its totient is φ = 20455676460.

The previous prime is 22501244113. The next prime is 22501244131. The reversal of 22501244117 is 71144210522.

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 a cyclic number.

It is not a de Polignac number, because 22501244117 - 2² = 22501244113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22501244117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22501244111) 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, 1022783813 + ... + 1022783834.

It is an arithmetic number, because the mean of its divisors is an integer number (6136702944).

Almost surely, 2^22501244117 is an apocalyptic number.

It is an amenable number.

22501244117 is a deficient number, since it is larger than the sum of its proper divisors (2045567659).

22501244117 is a wasteful number, since it uses less digits than its factorization.

22501244117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045567658.

The product of its (nonzero) digits is 4480, while the sum is 29.

Adding to 22501244117 its reverse (71144210522), we get a palindrome (93645454639).

The spelling of 22501244117 in words is "twenty-two billion, five hundred one million, two hundred forty-four thousand, one hundred seventeen".