11111201011100 has 36 divisors (see below), whose sum is σ = 24401803877304. Its totient is φ = 4390932444480.

The previous prime is 11111201011081. The next prime is 11111201011187. The reversal of 11111201011100 is 111010211111.

It is a happy number.

It is a super-3 number, since 3×11111201011100³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

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, 669341159 + ... + 669357758.

Almost surely, 2^{11111201011100} is an apocalyptic number.

11111201011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111201011100 is an abundant number, since it is smaller than the sum of its proper divisors (13290602866204).

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

11111201011100 is a wasteful number, since it uses less digits than its factorization.

11111201011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338699014 (or 1338699007 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 11111201011100 its reverse (111010211111), we get a palindrome (11222211222211).

The spelling of 11111201011100 in words is "eleven trillion, one hundred eleven billion, two hundred one million, eleven thousand, one hundred".