20011020020012 has 24 divisors (see below), whose sum is σ = 40022326415904. Its totient is φ = 8576090070912.

The previous prime is 20011020020011. The next prime is 20011020020021. The reversal of 20011020020012 is 21002002011002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20011020019975 and 20011020020002.

It is not an unprimeable number, because it can be changed into a prime (20011020020011) 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 7 ways as a sum of consecutive naturals, for example, 1541288 + ... + 6511344.

It is an arithmetic number, because the mean of its divisors is an integer number (1667596933996).

Almost surely, 2^{20011020020012} is an apocalyptic number.

It is an amenable number.

20011020020012 is an abundant number, since it is smaller than the sum of its proper divisors (20011306395892).

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

20011020020012 is a wasteful number, since it uses less digits than its factorization.

20011020020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113865 (or 5113863 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20011020020012 its reverse (21002002011002), we get a palindrome (41013022031014).

The spelling of 20011020020012 in words is "twenty trillion, eleven billion, twenty million, twenty thousand, twelve".