204214300343221 has 4 divisors (see below), whose sum is σ = 233387771820832. Its totient is φ = 175040828865612.

The previous prime is 204214300343219. The next prime is 204214300343297. The reversal of 204214300343221 is 122343003412402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204214300343221 - 2¹ = 204214300343219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204214300373221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14586735738795 + ... + 14586735738808.

It is an arithmetic number, because the mean of its divisors is an integer number (58346942955208).

Almost surely, 2^{204214300343221} is an apocalyptic number.

It is an amenable number.

204214300343221 is a deficient number, since it is larger than the sum of its proper divisors (29173471477611).

204214300343221 is an equidigital number, since it uses as much as digits as its factorization.

204214300343221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29173471477610.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 204214300343221 its reverse (122343003412402), we get a palindrome (326557303755623).

The spelling of 204214300343221 in words is "two hundred four trillion, two hundred fourteen billion, three hundred million, three hundred forty-three thousand, two hundred twenty-one".