22515312422 has 8 divisors (see below), whose sum is σ = 33944405616. Its totient is φ = 11200510552.

The previous prime is 22515312403. The next prime is 22515312437. The reversal of 22515312422 is 22421351522.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28572338 + ... + 28573125.

It is an arithmetic number, because the mean of its divisors is an integer number (4243050702).

Almost surely, 2^22515312422 is an apocalyptic number.

22515312422 is a deficient number, since it is larger than the sum of its proper divisors (11429093194).

22515312422 is a wasteful number, since it uses less digits than its factorization.

22515312422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57145662.

The product of its digits is 9600, while the sum is 29.

Adding to 22515312422 its reverse (22421351522), we get a palindrome (44936663944).

The spelling of 22515312422 in words is "twenty-two billion, five hundred fifteen million, three hundred twelve thousand, four hundred twenty-two".