13100434221 has 32 divisors (see below), whose sum is σ = 20459778048. Its totient is φ = 7300641600.

The previous prime is 13100434213. The next prime is 13100434253. The reversal of 13100434221 is 12243400131.

It is not a de Polignac number, because 13100434221 - 2³ = 13100434213 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 (13100434201) 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, 255871 + ... + 302771.

It is an arithmetic number, because the mean of its divisors is an integer number (639368064).

Almost surely, 2^13100434221 is an apocalyptic number.

It is an amenable number.

13100434221 is a deficient number, since it is larger than the sum of its proper divisors (7359343827).

13100434221 is a wasteful number, since it uses less digits than its factorization.

13100434221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47241.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 13100434221 its reverse (12243400131), we get a palindrome (25343834352).

The spelling of 13100434221 in words is "thirteen billion, one hundred million, four hundred thirty-four thousand, two hundred twenty-one".