22105415242 has 8 divisors (see below), whose sum is σ = 34301506500. Its totient is φ = 10671579744.

The previous prime is 22105415191. The next prime is 22105415249. The reversal of 22105415242 is 24251450122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19988587161 + 2116828081 = 141381^2 + 46009^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22105415242.

It is not an unprimeable number, because it can be changed into a prime (22105415249) 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, 190563867 + ... + 190563982.

Almost surely, 2^22105415242 is an apocalyptic number.

22105415242 is a deficient number, since it is larger than the sum of its proper divisors (12196091258).

22105415242 is a wasteful number, since it uses less digits than its factorization.

22105415242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381127880.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 22105415242 its reverse (24251450122), we get a palindrome (46356865364).

The spelling of 22105415242 in words is "twenty-two billion, one hundred five million, four hundred fifteen thousand, two hundred forty-two".