20201100211100 has 36 divisors (see below), whose sum is σ = 43845022869144. Its totient is φ = 8078848303680.

The previous prime is 20201100211099. The next prime is 20201100211109. The reversal of 20201100211100 is 111200110202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201100211109) 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, 19387022 + ... + 20402421.

Almost surely, 2^{20201100211100} is an apocalyptic number.

20201100211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201100211100 is an abundant number, since it is smaller than the sum of its proper divisors (23643922658044).

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

20201100211100 is a wasteful number, since it uses less digits than its factorization.

20201100211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39794534 (or 39794527 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20201100211100 its reverse (111200110202), we get a palindrome (20312300321302).

The spelling of 20201100211100 in words is "twenty trillion, two hundred one billion, one hundred million, two hundred eleven thousand, one hundred".