204343120221 has 8 divisors (see below), whose sum is σ = 279821209824. Its totient is φ = 132546888720.

The previous prime is 204343120217. The next prime is 204343120243. The reversal of 204343120221 is 122021343402.

It is a happy number.

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

It is not a de Polignac number, because 204343120221 - 2² = 204343120217 is a prime.

It is a super-2 number, since 2×204343120221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204343120191 and 204343120200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204343120211) 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, 920464395 + ... + 920464616.

It is an arithmetic number, because the mean of its divisors is an integer number (34977651228).

Almost surely, 2^204343120221 is an apocalyptic number.

It is an amenable number.

204343120221 is a deficient number, since it is larger than the sum of its proper divisors (75478089603).

204343120221 is a wasteful number, since it uses less digits than its factorization.

204343120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840929051.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 204343120221 its reverse (122021343402), we get a palindrome (326364463623).

The spelling of 204343120221 in words is "two hundred four billion, three hundred forty-three million, one hundred twenty thousand, two hundred twenty-one".