13134013221 has 32 divisors (see below), whose sum is σ = 21254088960. Its totient is φ = 7042646016.

The previous prime is 13134013177. The next prime is 13134013223. The reversal of 13134013221 is 12231043131.

It is not a de Polignac number, because 13134013221 - 2¹⁰ = 13134012197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13134013223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65725 + ... + 174893.

It is an arithmetic number, because the mean of its divisors is an integer number (664190280).

Almost surely, 2^13134013221 is an apocalyptic number.

It is an amenable number.

13134013221 is a deficient number, since it is larger than the sum of its proper divisors (8120075739).

13134013221 is a wasteful number, since it uses less digits than its factorization.

13134013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109533.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13134013221 its reverse (12231043131), we get a palindrome (25365056352).

The spelling of 13134013221 in words is "thirteen billion, one hundred thirty-four million, thirteen thousand, two hundred twenty-one".