22253533500 has 144 divisors (see below), whose sum is σ = 71229543840. Its totient is φ = 5394752000.

The previous prime is 22253533481. The next prime is 22253533501. The reversal of 22253533500 is 533535222.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22253533501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120196 + ... + 242804.

It is an arithmetic number, because the mean of its divisors is an integer number (494649610).

Almost surely, 2^22253533500 is an apocalyptic number.

22253533500 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 22253533500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35614771920).

22253533500 is an abundant number, since it is smaller than the sum of its proper divisors (48976010340).

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

22253533500 is a wasteful number, since it uses less digits than its factorization.

22253533500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122653 (or 122630 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 30.

The spelling of 22253533500 in words is "twenty-two billion, two hundred fifty-three million, five hundred thirty-three thousand, five hundred".