12231021525 has 48 divisors (see below), whose sum is σ = 21310094400. Its totient is φ = 6172968960.

The previous prime is 12231021499. The next prime is 12231021533. The reversal of 12231021525 is 52512013221.

12231021525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12231021525 - 2⁵ = 12231021493 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12231021495 and 12231021504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1416421 + ... + 1425029.

It is an arithmetic number, because the mean of its divisors is an integer number (443960300).

Almost surely, 2^12231021525 is an apocalyptic number.

12231021525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12231021525 is a deficient number, since it is larger than the sum of its proper divisors (9079072875).

12231021525 is a wasteful number, since it uses less digits than its factorization.

12231021525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9638 (or 9633 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 12231021525 its reverse (52512013221), we get a palindrome (64743034746).

The spelling of 12231021525 in words is "twelve billion, two hundred thirty-one million, twenty-one thousand, five hundred twenty-five".