20001002001012 has 36 divisors (see below), whose sum is σ = 50558645257120. Its totient is φ = 6666927234192.

The previous prime is 20001002001011. The next prime is 20001002001023. The reversal of 20001002001012 is 21010020010002.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20001002000985 and 20001002001003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001002001011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304833 + ... + 6332055.

Almost surely, 2^{20001002001012} is an apocalyptic number.

It is an amenable number.

20001002001012 is an abundant number, since it is smaller than the sum of its proper divisors (30557643256108).

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

20001002001012 is a wasteful number, since it uses less digits than its factorization.

20001002001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6119412 (or 6119407 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20001002001012 its reverse (21010020010002), we get a palindrome (41011022011014).

The spelling of 20001002001012 in words is "twenty trillion, one billion, two million, one thousand, twelve".