20001200200002 has 48 divisors (see below), whose sum is σ = 49527285812160. Its totient is φ = 5714570432736.

The previous prime is 20001200200001. The next prime is 20001200200147. The reversal of 20001200200002 is 20000200210002.

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

It is not an unprimeable number, because it can be changed into a prime (20001200200001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12476628 + ... + 13988160.

It is an arithmetic number, because the mean of its divisors is an integer number (1031818454420).

Almost surely, 2^{20001200200002} is an apocalyptic number.

20001200200002 is an abundant number, since it is smaller than the sum of its proper divisors (29526085612158).

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

20001200200002 is a wasteful number, since it uses less digits than its factorization.

20001200200002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616567 (or 1616564 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20001200200002 its reverse (20000200210002), we get a palindrome (40001400410004).

The spelling of 20001200200002 in words is "twenty trillion, one billion, two hundred million, two hundred thousand, two".