11323121243 has 24 divisors (see below), whose sum is σ = 13489869888. Its totient is φ = 9471558096.

The previous prime is 11323121221. The next prime is 11323121297. The reversal of 11323121243 is 34212132311.

It is not a de Polignac number, because 11323121243 - 2⁶ = 11323121179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11323127243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4218980 + ... + 4221662.

It is an arithmetic number, because the mean of its divisors is an integer number (562077912).

Almost surely, 2^11323121243 is an apocalyptic number.

11323121243 is a deficient number, since it is larger than the sum of its proper divisors (2166748645).

11323121243 is a wasteful number, since it uses less digits than its factorization.

11323121243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4743 (or 4736 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 11323121243 its reverse (34212132311), we get a palindrome (45535253554).

The spelling of 11323121243 in words is "eleven billion, three hundred twenty-three million, one hundred twenty-one thousand, two hundred forty-three".