234221321 has 4 divisors (see below), whose sum is σ = 235530000. Its totient is φ = 232912644.

The previous prime is 234221311. The next prime is 234221329. The reversal of 234221321 is 123122432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234221321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234221293 and 234221302.

It is not an unprimeable number, because it can be changed into a prime (234221329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654071 + ... + 654428.

It is an arithmetic number, because the mean of its divisors is an integer number (58882500).

Almost surely, 2^234221321 is an apocalyptic number.

It is an amenable number.

234221321 is a deficient number, since it is larger than the sum of its proper divisors (1308679).

234221321 is a wasteful number, since it uses less digits than its factorization.

234221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308678.

The product of its digits is 576, while the sum is 20.

The square root of 234221321 is about 15304.2909342446. The cubic root of 234221321 is about 616.4182317833.

Adding to 234221321 its reverse (123122432), we get a palindrome (357343753).

The spelling of 234221321 in words is "two hundred thirty-four million, two hundred twenty-one thousand, three hundred twenty-one".