204100555211 has 4 divisors (see below), whose sum is σ = 233257777392. Its totient is φ = 174943333032.

The previous prime is 204100555199. The next prime is 204100555213. The reversal of 204100555211 is 112555001402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112555001402 = 2 ⋅56277500701.

It is a cyclic number.

It is not a de Polignac number, because 204100555211 - 2⁶ = 204100555147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204100555213) 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, 14578611080 + ... + 14578611093.

It is an arithmetic number, because the mean of its divisors is an integer number (58314444348).

Almost surely, 2^204100555211 is an apocalyptic number.

204100555211 is a deficient number, since it is larger than the sum of its proper divisors (29157222181).

204100555211 is an equidigital number, since it uses as much as digits as its factorization.

204100555211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29157222180.

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 204100555211 its reverse (112555001402), we get a palindrome (316655556613).

The spelling of 204100555211 in words is "two hundred four billion, one hundred million, five hundred fifty-five thousand, two hundred eleven".