1112112021120 has 128 divisors (see below), whose sum is σ = 3549148539840. Its totient is φ = 296204181504.

The previous prime is 1112112021109. The next prime is 1112112021121. The reversal of 1112112021120 is 211202112111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×1112112021120² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1112112021120.

It is not an unprimeable number, because it can be changed into a prime (1112112021121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1237644 + ... + 1938036.

Almost surely, 2^{1112112021120} is an apocalyptic number.

1112112021120 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 1112112021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1774574269920).

1112112021120 is an abundant number, since it is smaller than the sum of its proper divisors (2437036518720).

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

1112112021120 is an equidigital number, since it uses as much as digits as its factorization.

1112112021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701242 (or 701230 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1112112021120 its reverse (211202112111), we get a palindrome (1323314133231).

Subtracting from 1112112021120 its reverse (211202112111), we obtain a palindrome (900909909009).

The spelling of 1112112021120 in words is "one trillion, one hundred twelve billion, one hundred twelve million, twenty-one thousand, one hundred twenty".