204120011 has 8 divisors (see below), whose sum is σ = 209744304. Its totient is φ = 198535680.

The previous prime is 204119947. The next prime is 204120019. The reversal of 204120011 is 110021402.

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

It is a cyclic number.

It is not a de Polignac number, because 204120011 - 2⁶ = 204119947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204119974 and 204120001.

It is not an unprimeable number, because it can be changed into a prime (204120019) 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, 515 + ... + 20211.

It is an arithmetic number, because the mean of its divisors is an integer number (26218038).

Almost surely, 2^204120011 is an apocalyptic number.

204120011 is a deficient number, since it is larger than the sum of its proper divisors (5624293).

204120011 is a wasteful number, since it uses less digits than its factorization.

204120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19981.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 204120011 is about 14287.0574647126. The cubic root of 204120011 is about 588.7919464106.

Adding to 204120011 its reverse (110021402), we get a palindrome (314141413).

The spelling of 204120011 in words is "two hundred four million, one hundred twenty thousand, eleven".