11101220111213 has 4 divisors (see below), whose sum is σ = 11337416283840. Its totient is φ = 10865023938588.

The previous prime is 11101220111153. The next prime is 11101220111299. The reversal of 11101220111213 is 31211102210111.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11101220111213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11101220111191 and 11101220111200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101220116213) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 118098086243 + ... + 118098086336.

It is an arithmetic number, because the mean of its divisors is an integer number (2834354070960).

Almost surely, 2^{11101220111213} is an apocalyptic number.

It is an amenable number.

11101220111213 is a deficient number, since it is larger than the sum of its proper divisors (236196172627).

11101220111213 is an equidigital number, since it uses as much as digits as its factorization.

11101220111213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236196172626.

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

Adding to 11101220111213 its reverse (31211102210111), we get a palindrome (42312322321324).

The spelling of 11101220111213 in words is "eleven trillion, one hundred one billion, two hundred twenty million, one hundred eleven thousand, two hundred thirteen".