12533223215 has 4 divisors (see below), whose sum is σ = 15039867864. Its totient is φ = 10026578568.

The previous prime is 12533223203. The next prime is 12533223233. The reversal of 12533223215 is 51232233521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12533223215 - 2⁸ = 12533222959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1253322317 + ... + 1253322326.

It is an arithmetic number, because the mean of its divisors is an integer number (3759966966).

Almost surely, 2^12533223215 is an apocalyptic number.

12533223215 is a deficient number, since it is larger than the sum of its proper divisors (2506644649).

12533223215 is an equidigital number, since it uses as much as digits as its factorization.

12533223215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506644648.

The product of its digits is 10800, while the sum is 29.

Adding to 12533223215 its reverse (51232233521), we get a palindrome (63765456736).

The spelling of 12533223215 in words is "twelve billion, five hundred thirty-three million, two hundred twenty-three thousand, two hundred fifteen".