20010110120 has 256 divisors, whose sum is σ = 61360588800. Its totient is φ = 5670466560.

The previous prime is 20010110047. The next prime is 20010110137. The reversal of 20010110120 is 2101101002.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 20010110098 and 20010110107.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 2678951 + ... + 2686409.

It is an arithmetic number, because the mean of its divisors is an integer number (239689800).

Almost surely, 2^20010110120 is an apocalyptic number.

20010110120 is a gapful number since it is divisible by the number (20) 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 20010110120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30680294400).

20010110120 is an abundant number, since it is smaller than the sum of its proper divisors (41350478680).

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

20010110120 is a wasteful number, since it uses less digits than its factorization.

20010110120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7568 (or 7564 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20010110120 its reverse (2101101002), we get a palindrome (22111211122).

The spelling of 20010110120 in words is "twenty billion, ten million, one hundred ten thousand, one hundred twenty".