12012511503 has 8 divisors (see below), whose sum is σ = 16067854768. Its totient is φ = 7982754624.

The previous prime is 12012511487. The next prime is 12012511517. The reversal of 12012511503 is 30511521021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12012511503 - 2⁴ = 12012511487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12012511503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012511523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6395500 + ... + 6397377.

It is an arithmetic number, because the mean of its divisors is an integer number (2008481846).

Almost surely, 2^12012511503 is an apocalyptic number.

12012511503 is a deficient number, since it is larger than the sum of its proper divisors (4055343265).

12012511503 is a wasteful number, since it uses less digits than its factorization.

12012511503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12793193.

The product of its (nonzero) digits is 300, while the sum is 21.

The spelling of 12012511503 in words is "twelve billion, twelve million, five hundred eleven thousand, five hundred three".