11521124500531 has 4 divisors (see below), whose sum is σ = 11623081354632. Its totient is φ = 11419167646432.

The previous prime is 11521124500513. The next prime is 11521124500537. The reversal of 11521124500531 is 13500542112511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11521124500531 - 2²⁹ = 11520587629619 is a prime.

It is a super-2 number, since 2×11521124500531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11521124500493 and 11521124500502.

It is not an unprimeable number, because it can be changed into a prime (11521124500537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50978426881 + ... + 50978427106.

It is an arithmetic number, because the mean of its divisors is an integer number (2905770338658).

Almost surely, 2^{11521124500531} is an apocalyptic number.

11521124500531 is a deficient number, since it is larger than the sum of its proper divisors (101956854101).

11521124500531 is a wasteful number, since it uses less digits than its factorization.

11521124500531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101956854100.

The product of its (nonzero) digits is 6000, while the sum is 31.

The spelling of 11521124500531 in words is "eleven trillion, five hundred twenty-one billion, one hundred twenty-four million, five hundred thousand, five hundred thirty-one".