20001102012200 has 48 divisors (see below), whose sum is σ = 46502862644160. Its totient is φ = 8000389112000.

The previous prime is 20001102012173. The next prime is 20001102012233. The reversal of 20001102012200 is 221020110002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51191585 + ... + 51580815.

It is an arithmetic number, because the mean of its divisors is an integer number (968809638420).

Almost surely, 2^{20001102012200} is an apocalyptic number.

20001102012200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001102012200 is an abundant number, since it is smaller than the sum of its proper divisors (26501760631960).

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

20001102012200 is a wasteful number, since it uses less digits than its factorization.

20001102012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646178 (or 646169 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20001102012200 its reverse (221020110002), we get a palindrome (20222122122202).

The spelling of 20001102012200 in words is "twenty trillion, one billion, one hundred two million, twelve thousand, two hundred".