11111001001100 has 144 divisors (see below), whose sum is σ = 32372639851776. Its totient is φ = 3196771488000.

The previous prime is 11111001001021. The next prime is 11111001001229. The reversal of 11111001001100 is 110010011111.

It is a super-4 number, since 4×11111001001100⁴ (a number of 53 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55399406 + ... + 55599605.

Almost surely, 2^{11111001001100} is an apocalyptic number.

11111001001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111001001100 is an abundant number, since it is smaller than the sum of its proper divisors (21261638850676).

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

11111001001100 is a wasteful number, since it uses less digits than its factorization.

11111001001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110999056 (or 110999049 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 8.

Adding to 11111001001100 its reverse (110010011111), we get a palindrome (11221011012211).

The spelling of 11111001001100 in words is "eleven trillion, one hundred eleven billion, one million, one thousand, one hundred".