13230421221 has 32 divisors (see below), whose sum is σ = 18661104000. Its totient is φ = 8314748928.

The previous prime is 13230421201. The next prime is 13230421247. The reversal of 13230421221 is 12212403231.

It is not a de Polignac number, because 13230421221 - 2¹⁷ = 13230290149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13230421201) 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, 17204325 + ... + 17205093.

It is an arithmetic number, because the mean of its divisors is an integer number (583159500).

Almost surely, 2^13230421221 is an apocalyptic number.

It is an amenable number.

13230421221 is a deficient number, since it is larger than the sum of its proper divisors (5430682779).

13230421221 is a wasteful number, since it uses less digits than its factorization.

13230421221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893.

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

Adding to 13230421221 its reverse (12212403231), we get a palindrome (25442824452).

The spelling of 13230421221 in words is "thirteen billion, two hundred thirty million, four hundred twenty-one thousand, two hundred twenty-one".