111232131230220 has 576 divisors, whose sum is σ = 431137225559040. Its totient is φ = 20839060408320.

The previous prime is 111232131230191. The next prime is 111232131230239. The reversal of 111232131230220 is 22032131232111.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 26450646 + ... + 30366114.

Almost surely, 2^{111232131230220} is an apocalyptic number.

111232131230220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111232131230220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215568612779520).

111232131230220 is an abundant number, since it is smaller than the sum of its proper divisors (319905094328820).

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

111232131230220 is a wasteful number, since it uses less digits than its factorization.

111232131230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915566 (or 3915553 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 111232131230220 its reverse (22032131232111), we get a palindrome (133264262462331).

The spelling of 111232131230220 in words is "one hundred eleven trillion, two hundred thirty-two billion, one hundred thirty-one million, two hundred thirty thousand, two hundred twenty".