221032133220 has 48 divisors (see below), whose sum is σ = 619153613568. Its totient is φ = 58916793600.

The previous prime is 221032133219. The next prime is 221032133233. The reversal of 221032133220 is 22331230122.

It is a happy number.

221032133220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 642409 + ... + 924528.

It is an arithmetic number, because the mean of its divisors is an integer number (12899033616).

Almost surely, 2^221032133220 is an apocalyptic number.

221032133220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221032133220 is an abundant number, since it is smaller than the sum of its proper divisors (398121480348).

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

221032133220 is a wasteful number, since it uses less digits than its factorization.

221032133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569300 (or 1569298 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221032133220 its reverse (22331230122), we get a palindrome (243363363342).

The spelling of 221032133220 in words is "two hundred twenty-one billion, thirty-two million, one hundred thirty-three thousand, two hundred twenty".