11123143321123 has 2 divisors, whose sum is σ = 11123143321124. Its totient is φ = 11123143321122.

The previous prime is 11123143321109. The next prime is 11123143321127. The reversal of 11123143321123 is 32112334132111.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (32112334132111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11123143321123 - 2⁴¹ = 8924120065571 is a prime.

It is a super-2 number, since 2×11123143321123² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11123143321091 and 11123143321100.

It is not a weakly prime, because it can be changed into another prime (11123143321127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561571660561 + 5561571660562.

It is an arithmetic number, because the mean of its divisors is an integer number (5561571660562).

Almost surely, 2^{11123143321123} is an apocalyptic number.

11123143321123 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123143321123 is an equidigital number, since it uses as much as digits as its factorization.

11123143321123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

Adding to 11123143321123 its reverse (32112334132111), we get a palindrome (43235477453234).

The spelling of 11123143321123 in words is "eleven trillion, one hundred twenty-three billion, one hundred forty-three million, three hundred twenty-one thousand, one hundred twenty-three".