13231211421 has 8 divisors (see below), whose sum is σ = 17642699424. Its totient is φ = 8820265520.

The previous prime is 13231211417. The next prime is 13231211479. The reversal of 13231211421 is 12411213231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13231211421 - 2² = 13231211417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231211921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74670 + ... + 178991.

It is an arithmetic number, because the mean of its divisors is an integer number (2205337428).

Almost surely, 2^13231211421 is an apocalyptic number.

It is an amenable number.

13231211421 is a deficient number, since it is larger than the sum of its proper divisors (4411488003).

13231211421 is a wasteful number, since it uses less digits than its factorization.

13231211421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271051.

The product of its digits is 288, while the sum is 21.

Adding to 13231211421 its reverse (12411213231), we get a palindrome (25642424652).

The spelling of 13231211421 in words is "thirteen billion, two hundred thirty-one million, two hundred eleven thousand, four hundred twenty-one".