221232033220 has 48 divisors (see below), whose sum is σ = 508452287616. Its totient is φ = 80189312000.

The previous prime is 221232033203. The next prime is 221232033227. The reversal of 221232033220 is 22330232122.

221232033220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221232033220² (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 a junction number, because it is equal to n+sod(n) for n = 221232033191 and 221232033200.

It is not an unprimeable number, because it can be changed into a prime (221232033227) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1548301 + ... + 1685140.

It is an arithmetic number, because the mean of its divisors is an integer number (10592755992).

Almost surely, 2^221232033220 is an apocalyptic number.

221232033220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221232033220 is an abundant number, since it is smaller than the sum of its proper divisors (287220254396).

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

221232033220 is a wasteful number, since it uses less digits than its factorization.

221232033220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233772 (or 3233770 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 221232033220 its reverse (22330232122), we get a palindrome (243562265342).

The spelling of 221232033220 in words is "two hundred twenty-one billion, two hundred thirty-two million, thirty-three thousand, two hundred twenty".