221032223220 has 48 divisors (see below), whose sum is σ = 632058110208. Its totient is φ = 57687841920.

The previous prime is 221032223219. The next prime is 221032223231. The reversal of 221032223220 is 22322230122.

221032223220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 39187291 + ... + 39192930.

It is an arithmetic number, because the mean of its divisors is an integer number (13167877296).

Almost surely, 2^221032223220 is an apocalyptic number.

221032223220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221032223220 is an abundant number, since it is smaller than the sum of its proper divisors (411025886988).

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

221032223220 is a wasteful number, since it uses less digits than its factorization.

221032223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78380280 (or 78380278 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 221032223220 its reverse (22322230122), we get a palindrome (243354453342).

The spelling of 221032223220 in words is "two hundred twenty-one billion, thirty-two million, two hundred twenty-three thousand, two hundred twenty".