204131222 has 4 divisors (see below), whose sum is σ = 306196836. Its totient is φ = 102065610.

The previous prime is 204131219. The next prime is 204131227. The reversal of 204131222 is 222131402.

204131222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 204131222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204131227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51032804 + ... + 51032807.

It is an arithmetic number, because the mean of its divisors is an integer number (76549209).

Almost surely, 2^204131222 is an apocalyptic number.

204131222 is a deficient number, since it is larger than the sum of its proper divisors (102065614).

204131222 is a wasteful number, since it uses less digits than its factorization.

204131222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102065613.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 204131222 is about 14287.4498074359. The cubic root of 204131222 is about 588.8027257321.

Adding to 204131222 its reverse (222131402), we get a palindrome (426262624).

The spelling of 204131222 in words is "two hundred four million, one hundred thirty-one thousand, two hundred twenty-two".