12015433213 has 16 divisors (see below), whose sum is σ = 14550278400. Its totient is φ = 9686059776.

The previous prime is 12015433117. The next prime is 12015433217. The reversal of 12015433213 is 31233451021.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12015433213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12015433217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130395 + ... + 202567.

It is an arithmetic number, because the mean of its divisors is an integer number (909392400).

Almost surely, 2^12015433213 is an apocalyptic number.

It is an amenable number.

12015433213 is a deficient number, since it is larger than the sum of its proper divisors (2534845187).

12015433213 is a wasteful number, since it uses less digits than its factorization.

12015433213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73596.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 12015433213 its reverse (31233451021), we get a palindrome (43248884234).

The spelling of 12015433213 in words is "twelve billion, fifteen million, four hundred thirty-three thousand, two hundred thirteen".