11111122211120 has 40 divisors (see below), whose sum is σ = 25903749833664. Its totient is φ = 4432338657792.

The previous prime is 11111122211113. The next prime is 11111122211209. The reversal of 11111122211120 is 2111222111111.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189192749 + ... + 189251468.

Almost surely, 2^{11111122211120} is an apocalyptic number.

11111122211120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111122211120 is an abundant number, since it is smaller than the sum of its proper divisors (14792627622544).

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

11111122211120 is a wasteful number, since it uses less digits than its factorization.

11111122211120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378444597 (or 378444591 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11111122211120 its reverse (2111222111111), we get a palindrome (13222344322231).

The spelling of 11111122211120 in words is "eleven trillion, one hundred eleven billion, one hundred twenty-two million, two hundred eleven thousand, one hundred twenty".