234011221 has 4 divisors (see below), whose sum is σ = 234137772. Its totient is φ = 233884672.

The previous prime is 234011161. The next prime is 234011233. The reversal of 234011221 is 122110432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 206238321 + 27772900 = 14361^2 + 5270^2 .

It is a cyclic number.

It is not a de Polignac number, because 234011221 - 2⁹ = 234010709 is a prime.

It is a super-2 number, since 2×234011221² = 109522503107821682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234011195 and 234011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234011251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60460 + ... + 64213.

It is an arithmetic number, because the mean of its divisors is an integer number (58534443).

Almost surely, 2^234011221 is an apocalyptic number.

It is an amenable number.

234011221 is a deficient number, since it is larger than the sum of its proper divisors (126551).

234011221 is a wasteful number, since it uses less digits than its factorization.

234011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126550.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 234011221 is about 15297.4253062403. The cubic root of 234011221 is about 616.2338645458.

Adding to 234011221 its reverse (122110432), we get a palindrome (356121653).

The spelling of 234011221 in words is "two hundred thirty-four million, eleven thousand, two hundred twenty-one".