20112000020020 has 24 divisors (see below), whose sum is σ = 42449591928744. Its totient is φ = 8003963458176.

The previous prime is 20112000020011. The next prime is 20112000020069. The reversal of 20112000020020 is 2002000021102.

It can be written as a sum of positive squares in 4 ways, for example, as 2099004054436 + 18012995965584 = 1448794^2 + 4244172^2 .

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 = 20112000019979 and 20112000020006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2552280327 + ... + 2552288206.

It is an arithmetic number, because the mean of its divisors is an integer number (1768732997031).

Almost surely, 2^{20112000020020} is an apocalyptic number.

20112000020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112000020020 is an abundant number, since it is smaller than the sum of its proper divisors (22337591908724).

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

20112000020020 is a wasteful number, since it uses less digits than its factorization.

20112000020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104568739 (or 5104568737 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20112000020020 its reverse (2002000021102), we get a palindrome (22114000041122).

The spelling of 20112000020020 in words is "twenty trillion, one hundred twelve billion, twenty thousand, twenty".