20010110112 has 144 divisors (see below), whose sum is σ = 58537690848. Its totient is φ = 6481175040.

The previous prime is 20010110047. The next prime is 20010110137. The reversal of 20010110112 is 21101101002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a junction number, because it is equal to n+sod(n) for n = 20010110094 and 20010110103.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1451283 + ... + 1465005.

It is an arithmetic number, because the mean of its divisors is an integer number (406511742).

Almost surely, 2^20010110112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20010110112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29268845424).

20010110112 is an abundant number, since it is smaller than the sum of its proper divisors (38527580736).

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

20010110112 is a wasteful number, since it uses less digits than its factorization.

20010110112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13883 (or 13872 counting only the distinct ones).

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

Adding to 20010110112 its reverse (21101101002), we get a palindrome (41111211114).

The spelling of 20010110112 in words is "twenty billion, ten million, one hundred ten thousand, one hundred twelve".