235566221 has 8 divisors (see below), whose sum is σ = 258329088. Its totient is φ = 213028000.

The previous prime is 235566211. The next prime is 235566257. The reversal of 235566221 is 122665532.

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

It is a cyclic number.

It is not a de Polignac number, because 235566221 - 2¹⁴ = 235549837 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 (235566211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53960 + ... + 58161.

It is an arithmetic number, because the mean of its divisors is an integer number (32291136).

Almost surely, 2^235566221 is an apocalyptic number.

It is an amenable number.

235566221 is a deficient number, since it is larger than the sum of its proper divisors (22762867).

235566221 is a wasteful number, since it uses less digits than its factorization.

235566221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112323.

The product of its digits is 21600, while the sum is 32.

The square root of 235566221 is about 15348.1666983389. The cubic root of 235566221 is about 617.5958062977.

The spelling of 235566221 in words is "two hundred thirty-five million, five hundred sixty-six thousand, two hundred twenty-one".