11211111001100 has 18 divisors (see below), whose sum is σ = 24328110872604. Its totient is φ = 4484444400400.

The previous prime is 11211111001049. The next prime is 11211111001177. The reversal of 11211111001100 is 110011111211.

It is a happy number.

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, 56055554906 + ... + 56055555105.

Almost surely, 2^{11211111001100} is an apocalyptic number.

11211111001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211111001100 is an abundant number, since it is smaller than the sum of its proper divisors (13116999871504).

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

11211111001100 is a wasteful number, since it uses less digits than its factorization.

11211111001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112111110025 (or 112111110018 counting only the distinct ones).

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

Adding to 11211111001100 its reverse (110011111211), we get a palindrome (11321122112311).

The spelling of 11211111001100 in words is "eleven trillion, two hundred eleven billion, one hundred eleven million, one thousand, one hundred".