11111213320223 has 4 divisors (see below), whose sum is σ = 11114507487048. Its totient is φ = 11107919153400.

The previous prime is 11111213320219. The next prime is 11111213320261. The reversal of 11111213320223 is 32202331211111.

It is a happy number.

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 11111213320223 - 2² = 11111213320219 is a prime.

It is a super-2 number, since 2×11111213320223² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111213320423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1647078353 + ... + 1647085098.

It is an arithmetic number, because the mean of its divisors is an integer number (2778626871762).

Almost surely, 2^{11111213320223} is an apocalyptic number.

11111213320223 is a deficient number, since it is larger than the sum of its proper divisors (3294166825).

11111213320223 is an equidigital number, since it uses as much as digits as its factorization.

11111213320223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3294166824.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11111213320223 its reverse (32202331211111), we get a palindrome (43313544531334).

It can be divided in two parts, 1111121 and 3320223, that added together give a palindrome (4431344).

The spelling of 11111213320223 in words is "eleven trillion, one hundred eleven billion, two hundred thirteen million, three hundred twenty thousand, two hundred twenty-three".