13531225212 has 36 divisors (see below), whose sum is σ = 36004139080. Its totient is φ = 4273018272.

The previous prime is 13531225189. The next prime is 13531225249. The reversal of 13531225212 is 21252213531.

13531225212 is a `hidden beast` number, since 13 + 5 + 3 + 122 + 521 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9890563 + ... + 9891930.

Almost surely, 2^13531225212 is an apocalyptic number.

13531225212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13531225212 is an abundant number, since it is smaller than the sum of its proper divisors (22472913868).

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

13531225212 is a wasteful number, since it uses less digits than its factorization.

13531225212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19782522 (or 19782517 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

Adding to 13531225212 its reverse (21252213531), we get a palindrome (34783438743).

The spelling of 13531225212 in words is "thirteen billion, five hundred thirty-one million, two hundred twenty-five thousand, two hundred twelve".