20001102212200 has 48 divisors (see below), whose sum is σ = 46503047900160. Its totient is φ = 8000357400000.

The previous prime is 20001102212197. The next prime is 20001102212207. The reversal of 20001102212200 is 221220110002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20001102212207) 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, 20881795 + ... + 21818605.

It is an arithmetic number, because the mean of its divisors is an integer number (968813497920).

Almost surely, 2^{20001102212200} is an apocalyptic number.

20001102212200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001102212200 is an abundant number, since it is smaller than the sum of its proper divisors (26501945687960).

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

20001102212200 is a wasteful number, since it uses less digits than its factorization.

20001102212200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043578 (or 1043569 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20001102212200 its reverse (221220110002), we get a palindrome (20222322322202).

It can be divided in two parts, 20001 and 102212200, that added together give a palindrome (102232201).

The spelling of 20001102212200 in words is "twenty trillion, one billion, one hundred two million, two hundred twelve thousand, two hundred".