11100121022111 has 16 divisors (see below), whose sum is σ = 12113643823008. Its totient is φ = 10087335820800.

The previous prime is 11100121022069. The next prime is 11100121022117. The reversal of 11100121022111 is 11122012100111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11100121022111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100121022117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411819011 + ... + 411845963.

It is an arithmetic number, because the mean of its divisors is an integer number (757102738938).

Almost surely, 2^{11100121022111} is an apocalyptic number.

11100121022111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11100121022111 is a deficient number, since it is larger than the sum of its proper divisors (1013522800897).

11100121022111 is a wasteful number, since it uses less digits than its factorization.

11100121022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39242.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11100121022111 its reverse (11122012100111), we get a palindrome (22222133122222).

It can be divided in two parts, 111001 and 21022111, that added together give a palindrome (21133112).

The spelling of 11100121022111 in words is "eleven trillion, one hundred billion, one hundred twenty-one million, twenty-two thousand, one hundred eleven".