11201221021100 has 72 divisors (see below), whose sum is σ = 26912111556288. Its totient is φ = 4012377652800.

The previous prime is 11201221021097. The next prime is 11201221021153. The reversal of 11201221021100 is 112012210211.

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, 75918302 + ... + 76065701.

Almost surely, 2^{11201221021100} is an apocalyptic number.

11201221021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11201221021100 is an abundant number, since it is smaller than the sum of its proper divisors (15710890535188).

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

11201221021100 is a wasteful number, since it uses less digits than its factorization.

11201221021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151984095 (or 151984088 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11201221021100 its reverse (112012210211), we get a palindrome (11313233231311).

11201221021100 divided by its reverse (112012210211) gives a square (100 = 10²).

It can be divided in two parts, 112012 and 21021100, that added together give a palindrome (21133112).

The spelling of 11201221021100 in words is "eleven trillion, two hundred one billion, two hundred twenty-one million, twenty-one thousand, one hundred".