1111021120000 has 200 divisors, whose sum is σ = 3026139475392. Its totient is φ = 404006400000.

The previous prime is 1111021119983. The next prime is 1111021120003. The reversal of 1111021120000 is 211201111.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (1111021120003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3362185 + ... + 3677815.

Almost surely, 2^{1111021120000} is an apocalyptic number.

1111021120000 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 1111021120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1513069737696).

1111021120000 is an abundant number, since it is smaller than the sum of its proper divisors (1915118355392).

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

1111021120000 is an frugal number, since it uses more digits than its factorization.

1111021120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315680 (or 315649 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1111021120000 its reverse (211201111), we get a palindrome (1111232321111).

The spelling of 1111021120000 in words is "one trillion, one hundred eleven billion, twenty-one million, one hundred twenty thousand".