11100212111111 has 4 divisors (see below), whose sum is σ = 11102454130224. Its totient is φ = 11097970092000.

The previous prime is 11100212111101. The next prime is 11100212111189. The reversal of 11100212111111 is 11111121200111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11100212111111 - 2¹⁸ = 11100211848967 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 (11100212111101) 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 3 ways as a sum of consecutive naturals, for example, 1121002130 + ... + 1121012031.

It is an arithmetic number, because the mean of its divisors is an integer number (2775613532556).

Almost surely, 2^{11100212111111} is an apocalyptic number.

11100212111111 is a deficient number, since it is larger than the sum of its proper divisors (2242019113).

11100212111111 is an equidigital number, since it uses as much as digits as its factorization.

11100212111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242019112.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 11100212111111 its reverse (11111121200111), we get a palindrome (22211333311222).

The spelling of 11100212111111 in words is "eleven trillion, one hundred billion, two hundred twelve million, one hundred eleven thousand, one hundred eleven".