11201220121100 has 36 divisors (see below), whose sum is σ = 24317230071624. Its totient is φ = 4478537374080.

The previous prime is 11201220121099. The next prime is 11201220121121. The reversal of 11201220121100 is 112102210211.

It is a super-3 number, since 3×11201220121100³ (a number of 40 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24152582 + ... + 24611981.

Almost surely, 2^{11201220121100} is an apocalyptic number.

11201220121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11201220121100 is an abundant number, since it is smaller than the sum of its proper divisors (13116009950524).

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

11201220121100 is a wasteful number, since it uses less digits than its factorization.

11201220121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48766874 (or 48766867 counting only the distinct ones).

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

Adding to 11201220121100 its reverse (112102210211), we get a palindrome (11313322331311).

The spelling of 11201220121100 in words is "eleven trillion, two hundred one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred".