11211201100020 has 96 divisors (see below), whose sum is σ = 32655242793600. Its totient is φ = 2870435997184.

The previous prime is 11211201099979. The next prime is 11211201100027. The reversal of 11211201100020 is 2000110211211.

11211201100020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11211201099969 and 11211201100005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211201100027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17686359 + ... + 18309278.

It is an arithmetic number, because the mean of its divisors is an integer number (340158779100).

Almost surely, 2^{11211201100020} is an apocalyptic number.

11211201100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211201100020 is an abundant number, since it is smaller than the sum of its proper divisors (21444041693580).

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

11211201100020 is a wasteful number, since it uses less digits than its factorization.

11211201100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35995857 (or 35995855 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11211201100020 its reverse (2000110211211), we get a palindrome (13211311311231).

The spelling of 11211201100020 in words is "eleven trillion, two hundred eleven billion, two hundred one million, one hundred thousand, twenty".