20110020121012 has 12 divisors (see below), whose sum is σ = 35236036497060. Its totient is φ = 10042581121856.

The previous prime is 20110020120893. The next prime is 20110020121033. The reversal of 20110020121012 is 21012102001102.

It can be written as a sum of positive squares in 2 ways, for example, as 8433064992676 + 11676955128336 = 2903974^2 + 3417156^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20110020120983 and 20110020121001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3107231023 + ... + 3107237494.

It is an arithmetic number, because the mean of its divisors is an integer number (2936336374755).

Almost surely, 2^{20110020121012} is an apocalyptic number.

It is an amenable number.

20110020121012 is a deficient number, since it is larger than the sum of its proper divisors (15126016376048).

20110020121012 is a wasteful number, since it uses less digits than its factorization.

20110020121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6214469330 (or 6214469328 counting only the distinct ones).

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

Adding to 20110020121012 its reverse (21012102001102), we get a palindrome (41122122122114).

The spelling of 20110020121012 in words is "twenty trillion, one hundred ten billion, twenty million, one hundred twenty-one thousand, twelve".