20112120110020 has 96 divisors (see below), whose sum is σ = 43345609882848. Its totient is φ = 7835690483712.

The previous prime is 20112120109927. The next prime is 20112120110021. The reversal of 20112120110020 is 2001102121102.

It can be written as a sum of positive squares in 16 ways, for example, as 9336972477316 + 10775147632704 = 3055646^2 + 3282552^2 .

It is not an unprimeable number, because it can be changed into a prime (20112120110021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185837044 + ... + 185945236.

It is an arithmetic number, because the mean of its divisors is an integer number (451516769613).

Almost surely, 2^{20112120110020} is an apocalyptic number.

20112120110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112120110020 is an abundant number, since it is smaller than the sum of its proper divisors (23233489772828).

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

20112120110020 is a wasteful number, since it uses less digits than its factorization.

20112120110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109529 (or 109527 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20112120110020 its reverse (2001102121102), we get a palindrome (22113222231122).

The spelling of 20112120110020 in words is "twenty trillion, one hundred twelve billion, one hundred twenty million, one hundred ten thousand, twenty".