22123263444 has 48 divisors (see below), whose sum is σ = 51977200128. Its totient is φ = 7323660288.

The previous prime is 22123263439. The next prime is 22123263541. The reversal of 22123263444 is 44436232122.

It is a super-2 number, since 2×22123263444² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1397944 + ... + 1413680.

It is an arithmetic number, because the mean of its divisors is an integer number (1082858336).

Almost surely, 2^22123263444 is an apocalyptic number.

It is an amenable number.

22123263444 is an abundant number, since it is smaller than the sum of its proper divisors (29853936684).

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

22123263444 is a wasteful number, since it uses less digits than its factorization.

22123263444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16544 (or 16542 counting only the distinct ones).

The product of its digits is 55296, while the sum is 33.

Adding to 22123263444 its reverse (44436232122), we get a palindrome (66559495566).

The spelling of 22123263444 in words is "twenty-two billion, one hundred twenty-three million, two hundred sixty-three thousand, four hundred forty-four".