111231231320000 has 280 divisors, whose sum is σ = 303870850039152. Its totient is φ = 40047232000000.

The previous prime is 111231231319997. The next prime is 111231231320059. The reversal of 111231231320000 is 23132132111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 43188524 + ... + 45691476.

Almost surely, 2^{111231231320000} is an apocalyptic number.

111231231320000 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 111231231320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151935425019576).

111231231320000 is an abundant number, since it is smaller than the sum of its proper divisors (192639618719152).

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

111231231320000 is a wasteful number, since it uses less digits than its factorization.

111231231320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503097 (or 2503072 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 111231231320000 its reverse (23132132111), we get a palindrome (111254363452111).

The spelling of 111231231320000 in words is "one hundred eleven trillion, two hundred thirty-one billion, two hundred thirty-one million, three hundred twenty thousand".