20110010020 has 48 divisors (see below), whose sum is σ = 44522331840. Its totient is φ = 7608871296.

The previous prime is 20110009981. The next prime is 20110010021. The reversal of 20110010020 is 2001001102.

It is a junction number, because it is equal to n+sod(n) for n = 20110009985 and 20110010012.

It is not an unprimeable number, because it can be changed into a prime (20110010021) 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 15 ways as a sum of consecutive naturals, for example, 207619 + ... + 288661.

It is an arithmetic number, because the mean of its divisors is an integer number (927548580).

Almost surely, 2^20110010020 is an apocalyptic number.

20110010020 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 20110010020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22261165920).

20110010020 is an abundant number, since it is smaller than the sum of its proper divisors (24412321820).

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

20110010020 is a wasteful number, since it uses less digits than its factorization.

20110010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81724 (or 81722 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 20110010020 its reverse (2001001102), we get a palindrome (22111011122).

The spelling of 20110010020 in words is "twenty billion, one hundred ten million, ten thousand, twenty".