234213221 has 8 divisors (see below), whose sum is σ = 259694688. Its totient is φ = 209430000.

The previous prime is 234213191. The next prime is 234213223. The reversal of 234213221 is 122312432.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234213221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 234213193 and 234213202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234213223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173855 + ... + 175196.

It is an arithmetic number, because the mean of its divisors is an integer number (32461836).

Almost surely, 2^234213221 is an apocalyptic number.

It is an amenable number.

234213221 is a deficient number, since it is larger than the sum of its proper divisors (25481467).

234213221 is a wasteful number, since it uses less digits than its factorization.

234213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349123.

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

The square root of 234213221 is about 15304.0263002910. The cubic root of 234213221 is about 616.4111259041.

Adding to 234213221 its reverse (122312432), we get a palindrome (356525653).

The spelling of 234213221 in words is "two hundred thirty-four million, two hundred thirteen thousand, two hundred twenty-one".