13447629221 has 96 divisors (see below), whose sum is σ = 17164492800. Its totient is φ = 10427304960.

The previous prime is 13447629211. The next prime is 13447629229. The reversal of 13447629221 is 12292674431.

It is not a de Polignac number, because 13447629221 - 2¹⁰ = 13447628197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13447629229) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 130559456 + ... + 130559558.

It is an arithmetic number, because the mean of its divisors is an integer number (178796800).

Almost surely, 2^13447629221 is an apocalyptic number.

It is an amenable number.

13447629221 is a deficient number, since it is larger than the sum of its proper divisors (3716863579).

13447629221 is a wasteful number, since it uses less digits than its factorization.

13447629221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 242 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The spelling of 13447629221 in words is "thirteen billion, four hundred forty-seven million, six hundred twenty-nine thousand, two hundred twenty-one".