20130110020 has 24 divisors (see below), whose sum is σ = 42691782168. Its totient is φ = 7972320000.

The previous prime is 20130110017. The next prime is 20130110029. The reversal of 20130110020 is 2001103102.

It can be written as a sum of positive squares in 4 ways, for example, as 3316838464 + 16813271556 = 57592^2 + 129666^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20130109979 and 20130110006.

It is not an unprimeable number, because it can be changed into a prime (20130110029) 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 7 ways as a sum of consecutive naturals, for example, 4980681 + ... + 4984720.

It is an arithmetic number, because the mean of its divisors is an integer number (1778824257).

Almost surely, 2^20130110020 is an apocalyptic number.

20130110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130110020 is an abundant number, since it is smaller than the sum of its proper divisors (22561672148).

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

20130110020 is a wasteful number, since it uses less digits than its factorization.

20130110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9965511 (or 9965509 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20130110020 its reverse (2001103102), we get a palindrome (22131213122).

The spelling of 20130110020 in words is "twenty billion, one hundred thirty million, one hundred ten thousand, twenty".