112100100120 has 128 divisors (see below), whose sum is σ = 375121886400. Its totient is φ = 29776969728.

The previous prime is 112100100089. The next prime is 112100100127. The reversal of 112100100120 is 21001001211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112100100127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75622 + ... + 479498.

Almost surely, 2^112100100120 is an apocalyptic number.

112100100120 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 112100100120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187560943200).

112100100120 is an abundant number, since it is smaller than the sum of its proper divisors (263021786280).

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

112100100120 is a wasteful number, since it uses less digits than its factorization.

112100100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404154 (or 404144 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 112100100120 its reverse (21001001211), we get a palindrome (133101101331).

It can be divided in two parts, 1 and 12100100120, that added together give a palindrome (12100100121).

The spelling of 112100100120 in words is "one hundred twelve billion, one hundred million, one hundred thousand, one hundred twenty".