204220101 has 8 divisors (see below), whose sum is σ = 274097344. Its totient is φ = 135244800.

The previous prime is 204220097. The next prime is 204220103. The reversal of 204220101 is 101022402.

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

It is not a de Polignac number, because 204220101 - 2² = 204220097 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 (204220103) 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, 224956 + ... + 225861.

It is an arithmetic number, because the mean of its divisors is an integer number (34262168).

Almost surely, 2^204220101 is an apocalyptic number.

It is an amenable number.

204220101 is a deficient number, since it is larger than the sum of its proper divisors (69877243).

204220101 is a wasteful number, since it uses less digits than its factorization.

204220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450971.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 204220101 is about 14290.5598560728. The cubic root of 204220101 is about 588.8881684906. Note that the first 3 decimals are identical.

Adding to 204220101 its reverse (101022402), we get a palindrome (305242503).

The spelling of 204220101 in words is "two hundred four million, two hundred twenty thousand, one hundred one".