111112021012000 has 192 divisors, whose sum is σ = 289255585338720. Its totient is φ = 41802276864000.

The previous prime is 111112021011961. The next prime is 111112021012019. The reversal of 111112021012000 is 210120211111.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 7013727504 + 111105007284496 = 83748^2 + 10540636^2 .

It is a super-2 number, since 2×111112021012000² (a number of 29 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 100703310 + ... + 101800690.

Almost surely, 2^{111112021012000} is an apocalyptic number.

111112021012000 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 111112021012000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144627792669360).

111112021012000 is an abundant number, since it is smaller than the sum of its proper divisors (178143564326720).

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

111112021012000 is a wasteful number, since it uses less digits than its factorization.

111112021012000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098912 (or 1098894 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111112021012000 its reverse (210120211111), we get a palindrome (111322141223111).

The spelling of 111112021012000 in words is "one hundred eleven trillion, one hundred twelve billion, twenty-one million, twelve thousand".