22031130144 has 96 divisors (see below), whose sum is σ = 61392764160. Its totient is φ = 6893760512.

The previous prime is 22031130133. The next prime is 22031130157. The reversal of 22031130144 is 44103113022.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 22031130144.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 617497 + ... + 652199.

It is an arithmetic number, because the mean of its divisors is an integer number (639507960).

Almost surely, 2^22031130144 is an apocalyptic number.

22031130144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22031130144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30696382080).

22031130144 is an abundant number, since it is smaller than the sum of its proper divisors (39361634016).

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

22031130144 is a wasteful number, since it uses less digits than its factorization.

22031130144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35122 (or 35114 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 22031130144 its reverse (44103113022), we get a palindrome (66134243166).

The spelling of 22031130144 in words is "twenty-two billion, thirty-one million, one hundred thirty thousand, one hundred forty-four".