13135224252 has 12 divisors (see below), whose sum is σ = 30648856616. Its totient is φ = 4378408080.

The previous prime is 13135224211. The next prime is 13135224259. The reversal of 13135224252 is 25242253131.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13135224259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547300999 + ... + 547301022.

Almost surely, 2^13135224252 is an apocalyptic number.

13135224252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13135224252 is an abundant number, since it is smaller than the sum of its proper divisors (17513632364).

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

13135224252 is a wasteful number, since it uses less digits than its factorization.

13135224252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094602028 (or 1094602026 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

Adding to 13135224252 its reverse (25242253131), we get a palindrome (38377477383).

The spelling of 13135224252 in words is "thirteen billion, one hundred thirty-five million, two hundred twenty-four thousand, two hundred fifty-two".