12524421111 has 16 divisors (see below), whose sum is σ = 16828183680. Its totient is φ = 8285199840.

The previous prime is 12524421109. The next prime is 12524421193. The reversal of 12524421111 is 11112442521.

It is not a de Polignac number, because 12524421111 - 2¹ = 12524421109 is a prime.

It is a super-2 number, since 2×12524421111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12524421911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 919396 + ... + 932918.

It is an arithmetic number, because the mean of its divisors is an integer number (1051761480).

Almost surely, 2^12524421111 is an apocalyptic number.

12524421111 is a deficient number, since it is larger than the sum of its proper divisors (4303762569).

12524421111 is a wasteful number, since it uses less digits than its factorization.

12524421111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15886.

The product of its digits is 640, while the sum is 24.

Adding to 12524421111 its reverse (11112442521), we get a palindrome (23636863632).

The spelling of 12524421111 in words is "twelve billion, five hundred twenty-four million, four hundred twenty-one thousand, one hundred eleven".