11521123143143 has 2 divisors, whose sum is σ = 11521123143144. Its totient is φ = 11521123143142.

The previous prime is 11521123143133. The next prime is 11521123143157. The reversal of 11521123143143 is 34134132112511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11521123143143 - 2²² = 11521118948839 is a prime.

It is a super-3 number, since 3×11521123143143³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11521123143113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5760561571571 + 5760561571572.

It is an arithmetic number, because the mean of its divisors is an integer number (5760561571572).

Almost surely, 2^{11521123143143} is an apocalyptic number.

11521123143143 is a deficient number, since it is larger than the sum of its proper divisors (1).

11521123143143 is an equidigital number, since it uses as much as digits as its factorization.

11521123143143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

Adding to 11521123143143 its reverse (34134132112511), we get a palindrome (45655255255654).

The spelling of 11521123143143 in words is "eleven trillion, five hundred twenty-one billion, one hundred twenty-three million, one hundred forty-three thousand, one hundred forty-three".