221131003232 has 96 divisors (see below), whose sum is σ = 456409961280. Its totient is φ = 105327452160.

The previous prime is 221131003213. The next prime is 221131003277. The reversal of 221131003232 is 232300131122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26854988 + ... + 26863220.

It is an arithmetic number, because the mean of its divisors is an integer number (4754270430).

Almost surely, 2^221131003232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221131003232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228204980640).

221131003232 is an abundant number, since it is smaller than the sum of its proper divisors (235278958048).

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

221131003232 is a wasteful number, since it uses less digits than its factorization.

221131003232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8656 (or 8648 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 221131003232 its reverse (232300131122), we get a palindrome (453431134354).

The spelling of 221131003232 in words is "two hundred twenty-one billion, one hundred thirty-one million, three thousand, two hundred thirty-two".