204120200011 has 16 divisors (see below), whose sum is σ = 259328892928. Its totient is φ = 156291962400.

The previous prime is 204120199991. The next prime is 204120200017. The reversal of 204120200011 is 110002021402.

It is a happy number.

It is not a de Polignac number, because 204120200011 - 2⁹ = 204120199499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 204120199964 and 204120200000.

It is not an unprimeable number, because it can be changed into a prime (204120200017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36175875 + ... + 36181516.

It is an arithmetic number, because the mean of its divisors is an integer number (16208055808).

Almost surely, 2^204120200011 is an apocalyptic number.

204120200011 is a deficient number, since it is larger than the sum of its proper divisors (55208692917).

204120200011 is a wasteful number, since it uses less digits than its factorization.

204120200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72357442.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 204120200011 its reverse (110002021402), we get a palindrome (314122221413).

The spelling of 204120200011 in words is "two hundred four billion, one hundred twenty million, two hundred thousand, eleven".