20002002121012 has 12 divisors (see below), whose sum is σ = 35156357441380. Its totient is φ = 9957328566336.

The previous prime is 20002002120983. The next prime is 20002002121019. The reversal of 20002002121012 is 21012120020002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7972231308196 + 12029770812816 = 2823514^2 + 3468396^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20002002120983 and 20002002121001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002002121019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10918122513 + ... + 10918124344.

Almost surely, 2^{20002002121012} is an apocalyptic number.

It is an amenable number.

20002002121012 is a deficient number, since it is larger than the sum of its proper divisors (15154355320368).

20002002121012 is a wasteful number, since it uses less digits than its factorization.

20002002121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21836247090 (or 21836247088 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20002002121012 its reverse (21012120020002), we get a palindrome (41014122141014).

The spelling of 20002002121012 in words is "twenty trillion, two billion, two million, one hundred twenty-one thousand, twelve".