204243012111 has 8 divisors (see below), whose sum is σ = 275131480624. Its totient is φ = 134758275840.

The previous prime is 204243012109. The next prime is 204243012119. The reversal of 204243012111 is 111210342402.

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

It is not a de Polignac number, because 204243012111 - 2¹ = 204243012109 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 (204243012119) 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, 350932720 + ... + 350933301.

It is an arithmetic number, because the mean of its divisors is an integer number (34391435078).

Almost surely, 2^204243012111 is an apocalyptic number.

204243012111 is a deficient number, since it is larger than the sum of its proper divisors (70888468513).

204243012111 is an equidigital number, since it uses as much as digits as its factorization.

204243012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701866121.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 204243012111 its reverse (111210342402), we get a palindrome (315453354513).

The spelling of 204243012111 in words is "two hundred four billion, two hundred forty-three million, twelve thousand, one hundred eleven".