205264221 has 8 divisors (see below), whose sum is σ = 273752160. Its totient is φ = 136809552.

The previous prime is 205264217. The next prime is 205264231. The reversal of 205264221 is 122462502.

It is a happy number.

205264221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 205264221 - 2² = 205264217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205264191 and 205264200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205264231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17791 + ... + 26963.

It is an arithmetic number, because the mean of its divisors is an integer number (34219020).

Almost surely, 2^205264221 is an apocalyptic number.

It is an amenable number.

205264221 is a deficient number, since it is larger than the sum of its proper divisors (68487939).

205264221 is an equidigital number, since it uses as much as digits as its factorization.

205264221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16635.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 205264221 is about 14327.0450896198. The cubic root of 205264221 is about 589.8900695312.

The spelling of 205264221 in words is "two hundred five million, two hundred sixty-four thousand, two hundred twenty-one".