20010113112 has 128 divisors (see below), whose sum is σ = 58529952000. Its totient is φ = 5636067840.

The previous prime is 20010113107. The next prime is 20010113117. The reversal of 20010113112 is 21131101002.

It is an interprime number because it is at equal distance from previous prime (20010113107) and next prime (20010113117).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010113117) 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 31 ways as a sum of consecutive naturals, for example, 228214 + ... + 303482.

It is an arithmetic number, because the mean of its divisors is an integer number (457265250).

Almost surely, 2^20010113112 is an apocalyptic number.

20010113112 is a gapful number since it is divisible by the number (22) 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 20010113112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29264976000).

20010113112 is an abundant number, since it is smaller than the sum of its proper divisors (38519838888).

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

20010113112 is a wasteful number, since it uses less digits than its factorization.

20010113112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75361 (or 75357 counting only the distinct ones).

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

Adding to 20010113112 its reverse (21131101002), we get a palindrome (41141214114).

The spelling of 20010113112 in words is "twenty billion, ten million, one hundred thirteen thousand, one hundred twelve".