220531540332 has 12 divisors (see below), whose sum is σ = 514573594136. Its totient is φ = 73510513440.

The previous prime is 220531540291. The next prime is 220531540391. The reversal of 220531540332 is 233045135022.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 220531540332.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9188814169 + ... + 9188814192.

Almost surely, 2^220531540332 is an apocalyptic number.

It is an amenable number.

220531540332 is an abundant number, since it is smaller than the sum of its proper divisors (294042053804).

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

220531540332 is a wasteful number, since it uses less digits than its factorization.

220531540332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18377628368 (or 18377628366 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 220531540332 its reverse (233045135022), we get a palindrome (453576675354).

The spelling of 220531540332 in words is "two hundred twenty billion, five hundred thirty-one million, five hundred forty thousand, three hundred thirty-two".