221332233100 has 72 divisors (see below), whose sum is σ = 551530324800. Its totient is φ = 76248417600.

The previous prime is 221332233053. The next prime is 221332233131. The reversal of 221332233100 is 1332233122.

It is a super-2 number, since 2×221332233100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5274130 + ... + 5315929.

It is an arithmetic number, because the mean of its divisors is an integer number (7660143400).

Almost surely, 2^221332233100 is an apocalyptic number.

221332233100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221332233100 is an abundant number, since it is smaller than the sum of its proper divisors (330198091700).

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

221332233100 is a wasteful number, since it uses less digits than its factorization.

221332233100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10590103 (or 10590096 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 221332233100 its sum of digits (22), we get a palindrome (221332233122).

Adding to 221332233100 its reverse (1332233122), we get a palindrome (222664466222).

It can be divided in two parts, 2213322 and 33100, that added together give a palindrome (2246422).

The spelling of 221332233100 in words is "two hundred twenty-one billion, three hundred thirty-two million, two hundred thirty-three thousand, one hundred".