22018400022 has 32 divisors (see below), whose sum is σ = 44530866432. Its totient is φ = 7257335904.

The previous prime is 22018400003. The next prime is 22018400029. The reversal of 22018400022 is 22000481022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22018400029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392073 + ... + 444699.

It is an arithmetic number, because the mean of its divisors is an integer number (1391589576).

Almost surely, 2^22018400022 is an apocalyptic number.

22018400022 is an abundant number, since it is smaller than the sum of its proper divisors (22512466410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22018400022 is a wasteful number, since it uses less digits than its factorization.

22018400022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53412.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22018400022 its reverse (22000481022), we get a palindrome (44018881044).

The spelling of 22018400022 in words is "twenty-two billion, eighteen million, four hundred thousand, twenty-two".