204001231211 has 4 divisors (see below), whose sum is σ = 204010373400. Its totient is φ = 203992089024.

The previous prime is 204001231207. The next prime is 204001231229. The reversal of 204001231211 is 112132100402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204001231211 - 2² = 204001231207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204001231211.

It is not an unprimeable number, because it can be changed into a prime (204001230211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4537541 + ... + 4582278.

It is an arithmetic number, because the mean of its divisors is an integer number (51002593350).

Almost surely, 2^204001231211 is an apocalyptic number.

204001231211 is a deficient number, since it is larger than the sum of its proper divisors (9142189).

204001231211 is an equidigital number, since it uses as much as digits as its factorization.

204001231211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9142188.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 204001231211 its reverse (112132100402), we get a palindrome (316133331613).

The spelling of 204001231211 in words is "two hundred four billion, one million, two hundred thirty-one thousand, two hundred eleven".