12120513532 has 6 divisors (see below), whose sum is σ = 21210898688. Its totient is φ = 6060256764.

The previous prime is 12120513473. The next prime is 12120513533. The reversal of 12120513532 is 23531502121.

It is a junction number, because it is equal to n+sod(n) for n = 12120513497 and 12120513506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120513533) 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 as a sum of consecutive naturals, namely, 1515064188 + ... + 1515064195.

Almost surely, 2^12120513532 is an apocalyptic number.

It is an amenable number.

12120513532 is a deficient number, since it is larger than the sum of its proper divisors (9090385156).

12120513532 is a wasteful number, since it uses less digits than its factorization.

12120513532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030128387 (or 3030128385 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 12120513532 in words is "twelve billion, one hundred twenty million, five hundred thirteen thousand, five hundred thirty-two".