11123326213453 has 4 divisors (see below), whose sum is σ = 11123332896060. Its totient is φ = 11123319530848.

The previous prime is 11123326213423. The next prime is 11123326213463. The reversal of 11123326213453 is 35431262332111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8615293373124 + 2508032840329 = 2935182^2 + 1583677^2 .

It is a cyclic number.

It is not a de Polignac number, because 11123326213453 - 2³³ = 11114736278861 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 (11123326213403) 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, 1367001 + ... + 4910737.

It is an arithmetic number, because the mean of its divisors is an integer number (2780833224015).

Almost surely, 2^{11123326213453} is an apocalyptic number.

It is an amenable number.

11123326213453 is a deficient number, since it is larger than the sum of its proper divisors (6682607).

11123326213453 is an equidigital number, since it uses as much as digits as its factorization.

11123326213453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6682606.

The product of its digits is 77760, while the sum is 37.

Adding to 11123326213453 its reverse (35431262332111), we get a palindrome (46554588545564).

The spelling of 11123326213453 in words is "eleven trillion, one hundred twenty-three billion, three hundred twenty-six million, two hundred thirteen thousand, four hundred fifty-three".