11111021200100 has 18 divisors (see below), whose sum is σ = 24110916004434. Its totient is φ = 4444408480000.

The previous prime is 11111021200073. The next prime is 11111021200121. The reversal of 11111021200100 is 100212011111.

11111021200100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 711647462464 + 10399373737636 = 843592^2 + 3224806^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55555105901 + ... + 55555106100.

Almost surely, 2^{11111021200100} is an apocalyptic number.

11111021200100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111021200100 is an abundant number, since it is smaller than the sum of its proper divisors (12999894804334).

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

11111021200100 is a wasteful number, since it uses less digits than its factorization.

11111021200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111110212015 (or 111110212008 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11111021200100 its reverse (100212011111), we get a palindrome (11211233211211).

The spelling of 11111021200100 in words is "eleven trillion, one hundred eleven billion, twenty-one million, two hundred thousand, one hundred".