20001102001100 has 72 divisors (see below), whose sum is σ = 47665835910000. Its totient is φ = 7224315001600.

The previous prime is 20001102001087. The next prime is 20001102001213. The reversal of 20001102001100 is 110020110002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60852275 + ... + 61180074.

It is an arithmetic number, because the mean of its divisors is an integer number (662025498750).

Almost surely, 2^{20001102001100} is an apocalyptic number.

20001102001100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001102001100 is an abundant number, since it is smaller than the sum of its proper divisors (27664733908900).

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

20001102001100 is a wasteful number, since it uses less digits than its factorization.

20001102001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122032523 (or 122032516 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20001102001100 its reverse (110020110002), we get a palindrome (20111122111102).

The spelling of 20001102001100 in words is "twenty trillion, one billion, one hundred two million, one thousand, one hundred".