11121101211 has 32 divisors (see below), whose sum is σ = 17018620416. Its totient is φ = 6397920000.

The previous prime is 11121101179. The next prime is 11121101237. The reversal of 11121101211 is 11210112111.

It is not a de Polignac number, because 11121101211 - 2⁵ = 11121101179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11121101281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61015 + ... + 161136.

It is an arithmetic number, because the mean of its divisors is an integer number (531831888).

Almost surely, 2^11121101211 is an apocalyptic number.

11121101211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11121101211 is a deficient number, since it is larger than the sum of its proper divisors (5897519205).

11121101211 is a wasteful number, since it uses less digits than its factorization.

11121101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222243.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11121101211 its reverse (11210112111), we get a palindrome (22331213322).

The spelling of 11121101211 in words is "eleven billion, one hundred twenty-one million, one hundred one thousand, two hundred eleven".