1112110001220 has 96 divisors (see below), whose sum is σ = 3206508278400. Its totient is φ = 287785903104.

The previous prime is 1112110001207. The next prime is 1112110001221. The reversal of 1112110001220 is 221000112111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1112110001196 and 1112110001205.

It is not an unprimeable number, because it can be changed into a prime (1112110001221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180496 + ... + 1502264.

It is an arithmetic number, because the mean of its divisors is an integer number (33401127900).

Almost surely, 2^{1112110001220} is an apocalyptic number.

1112110001220 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 1112110001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1603254139200).

1112110001220 is an abundant number, since it is smaller than the sum of its proper divisors (2094398277180).

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

1112110001220 is a wasteful number, since it uses less digits than its factorization.

1112110001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322197 (or 1322195 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1112110001220 its reverse (221000112111), we get a palindrome (1333110113331).

The spelling of 1112110001220 in words is "one trillion, one hundred twelve billion, one hundred ten million, one thousand, two hundred twenty".