22331321144 has 64 divisors (see below), whose sum is σ = 46051476480. Its totient is φ = 10067760000.

The previous prime is 22331321123. The next prime is 22331321179. The reversal of 22331321144 is 44112313322.

It is a super-2 number, since 2×22331321144² (a number of 21 digits) contains 22 as substring.

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, 15692417 + ... + 15693839.

It is an arithmetic number, because the mean of its divisors is an integer number (719554320).

Almost surely, 2^22331321144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22331321144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23025738240).

22331321144 is an abundant number, since it is smaller than the sum of its proper divisors (23720155336).

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

22331321144 is a wasteful number, since it uses less digits than its factorization.

22331321144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772 (or 2768 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

Adding to 22331321144 its reverse (44112313322), we get a palindrome (66443634466).

The spelling of 22331321144 in words is "twenty-two billion, three hundred thirty-one million, three hundred twenty-one thousand, one hundred forty-four".