11101112021213 has 4 divisors (see below), whose sum is σ = 11101118738880. Its totient is φ = 11101105303548.

The previous prime is 11101112021201. The next prime is 11101112021239. The reversal of 11101112021213 is 31212021110111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11101112021213 - 2¹⁰ = 11101112020189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11101112021191 and 11101112021200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101112020213) 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 3 ways as a sum of consecutive naturals, for example, 1041878 + ... + 4825736.

It is an arithmetic number, because the mean of its divisors is an integer number (2775279684720).

Almost surely, 2^{11101112021213} is an apocalyptic number.

It is an amenable number.

11101112021213 is a deficient number, since it is larger than the sum of its proper divisors (6717667).

11101112021213 is an equidigital number, since it uses as much as digits as its factorization.

11101112021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6717666.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 11101112021213 its reverse (31212021110111), we get a palindrome (42313133131324).

The spelling of 11101112021213 in words is "eleven trillion, one hundred one billion, one hundred twelve million, twenty-one thousand, two hundred thirteen".