22231253520 has 480 divisors, whose sum is σ = 92346089472. Its totient is φ = 4859813376.

The previous prime is 22231253507. The next prime is 22231253531. The reversal of 22231253520 is 2535213222.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3126289 + ... + 3133391.

Almost surely, 2^22231253520 is an apocalyptic number.

22231253520 is a gapful number since it is divisible by the number (20) 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 22231253520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46173044736).

22231253520 is an abundant number, since it is smaller than the sum of its proper divisors (70114835952).

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

22231253520 is a wasteful number, since it uses less digits than its factorization.

22231253520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7161 (or 7143 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 22231253520 its reverse (2535213222), we get a palindrome (24766466742).

The spelling of 22231253520 in words is "twenty-two billion, two hundred thirty-one million, two hundred fifty-three thousand, five hundred twenty".