12535223000 has 64 divisors (see below), whose sum is σ = 29403410400. Its totient is φ = 5001955200.

The previous prime is 12535222981. The next prime is 12535223017. The reversal of 12535223000 is 32253521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404042 + ... + 433958.

Almost surely, 2^12535223000 is an apocalyptic number.

12535223000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12535223000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14701705200).

12535223000 is an abundant number, since it is smaller than the sum of its proper divisors (16868187400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12535223000 is a wasteful number, since it uses less digits than its factorization.

12535223000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30357 (or 30343 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

Adding to 12535223000 its reverse (32253521), we get a palindrome (12567476521).

The spelling of 12535223000 in words is "twelve billion, five hundred thirty-five million, two hundred twenty-three thousand".