234456221 has 4 divisors (see below), whose sum is σ = 234556992. Its totient is φ = 234355452.

The previous prime is 234456203. The next prime is 234456223. The reversal of 234456221 is 122654432.

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-234456221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234456223) 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, 46811 + ... + 51576.

It is an arithmetic number, because the mean of its divisors is an integer number (58639248).

Almost surely, 2^234456221 is an apocalyptic number.

It is an amenable number.

234456221 is a deficient number, since it is larger than the sum of its proper divisors (100771).

234456221 is an equidigital number, since it uses as much as digits as its factorization.

234456221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100770.

The product of its digits is 11520, while the sum is 29.

The square root of 234456221 is about 15311.9633293709. The cubic root of 234456221 is about 616.6242310544.

The spelling of 234456221 in words is "two hundred thirty-four million, four hundred fifty-six thousand, two hundred twenty-one".