13252221532 has 18 divisors (see below), whose sum is σ = 25491360944. Its totient is φ = 6023736840.

The previous prime is 13252221487. The next prime is 13252221533. The reversal of 13252221532 is 23512225231.

It is a self number, because there is not a number n which added to its sum of digits gives 13252221532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13252221533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13689828 + ... + 13690795.

Almost surely, 2^13252221532 is an apocalyptic number.

It is an amenable number.

13252221532 is a deficient number, since it is larger than the sum of its proper divisors (12239139412).

13252221532 is a wasteful number, since it uses less digits than its factorization.

13252221532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27380649 (or 27380636 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

Adding to 13252221532 its reverse (23512225231), we get a palindrome (36764446763).

The spelling of 13252221532 in words is "thirteen billion, two hundred fifty-two million, two hundred twenty-one thousand, five hundred thirty-two".