221313032300 has 36 divisors (see below), whose sum is σ = 481609836456. Its totient is φ = 88274419200.

The previous prime is 221313032249. The next prime is 221313032309. The reversal of 221313032300 is 3230313122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (221313032309) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3099446 + ... + 3170045.

Almost surely, 2^221313032300 is an apocalyptic number.

221313032300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221313032300 is an abundant number, since it is smaller than the sum of its proper divisors (260296804156).

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

221313032300 is a wasteful number, since it uses less digits than its factorization.

221313032300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6269858 (or 6269851 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 221313032300 its reverse (3230313122), we get a palindrome (224543345422).

The spelling of 221313032300 in words is "two hundred twenty-one billion, three hundred thirteen million, thirty-two thousand, three hundred".