20001210012 has 96 divisors (see below), whose sum is σ = 59289484800. Its totient is φ = 5712062976.

The previous prime is 20001210001. The next prime is 20001210037. The reversal of 20001210012 is 21001210002.

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 = 20001209976 and 20001210003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2235564 + ... + 2244492.

It is an arithmetic number, because the mean of its divisors is an integer number (617598800).

Almost surely, 2^20001210012 is an apocalyptic number.

It is an amenable number.

20001210012 is an abundant number, since it is smaller than the sum of its proper divisors (39288274788).

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

20001210012 is a wasteful number, since it uses less digits than its factorization.

20001210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11912 (or 11904 counting only the distinct ones).

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

Adding to 20001210012 its reverse (21001210002), we get a palindrome (41002420014).

The spelling of 20001210012 in words is "twenty billion, one million, two hundred ten thousand, twelve".