22565222320406 has 4 divisors (see below), whose sum is σ = 33847833480612. Its totient is φ = 11282611160202.

The previous prime is 22565222320393. The next prime is 22565222320439. The reversal of 22565222320406 is 60402322256522.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5641305580100 + ... + 5641305580103.

It is an arithmetic number, because the mean of its divisors is an integer number (8461958370153).

Almost surely, 2^{22565222320406} is an apocalyptic number.

22565222320406 is a deficient number, since it is larger than the sum of its proper divisors (11282611160206).

22565222320406 is a wasteful number, since it uses less digits than its factorization.

22565222320406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11282611160205.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 22565222320406 its reverse (60402322256522), we get a palindrome (82967544576928).

The spelling of 22565222320406 in words is "twenty-two trillion, five hundred sixty-five billion, two hundred twenty-two million, three hundred twenty thousand, four hundred six".