22220440406 has 16 divisors (see below), whose sum is σ = 34037452800. Its totient is φ = 10876199208.

The previous prime is 22220440387. The next prime is 22220440421. The reversal of 22220440406 is 60404402222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365750 + ... + 422153.

It is an arithmetic number, because the mean of its divisors is an integer number (2127340800).

Almost surely, 2^22220440406 is an apocalyptic number.

22220440406 is a deficient number, since it is larger than the sum of its proper divisors (11817012394).

22220440406 is a wasteful number, since it uses less digits than its factorization.

22220440406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788203.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 22220440406 its reverse (60404402222), we get a palindrome (82624842628).

The spelling of 22220440406 in words is "twenty-two billion, two hundred twenty million, four hundred forty thousand, four hundred six".