11123021531243 has 2 divisors, whose sum is σ = 11123021531244. Its totient is φ = 11123021531242.

The previous prime is 11123021531161. The next prime is 11123021531257. The reversal of 11123021531243 is 34213512032111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11123021531243 - 2¹⁸ = 11123021269099 is a prime.

It is not a weakly prime, because it can be changed into another prime (11123021531263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561510765621 + 5561510765622.

It is an arithmetic number, because the mean of its divisors is an integer number (5561510765622).

Almost surely, 2^{11123021531243} is an apocalyptic number.

11123021531243 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123021531243 is an equidigital number, since it uses as much as digits as its factorization.

11123021531243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 11123021531243 its reverse (34213512032111), we get a palindrome (45336533563354).

The spelling of 11123021531243 in words is "eleven trillion, one hundred twenty-three billion, twenty-one million, five hundred thirty-one thousand, two hundred forty-three".