22131232300 has 72 divisors (see below), whose sum is σ = 51307202240. Its totient is φ = 8261352000.

The previous prime is 22131232223. The next prime is 22131232337. The reversal of 22131232300 is 323213122.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40375 + ... + 214225.

Almost surely, 2^22131232300 is an apocalyptic number.

22131232300 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 22131232300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25653601120).

22131232300 is an abundant number, since it is smaller than the sum of its proper divisors (29175969940).

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

22131232300 is a wasteful number, since it uses less digits than its factorization.

22131232300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173951 (or 173944 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 22131232300 its reverse (323213122), we get a palindrome (22454445422).

The spelling of 22131232300 in words is "twenty-two billion, one hundred thirty-one million, two hundred thirty-two thousand, three hundred".