204100211443243 has 4 divisors (see below), whose sum is σ = 216106106234040. Its totient is φ = 192094316652448.

The previous prime is 204100211443229. The next prime is 204100211443253. The reversal of 204100211443243 is 342344112001402.

It is a happy number.

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 204100211443243 - 2⁵ = 204100211443211 is a prime.

It is a super-2 number, since 2×204100211443243² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204100211443253) 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, 6002947395373 + ... + 6002947395406.

It is an arithmetic number, because the mean of its divisors is an integer number (54026526558510).

Almost surely, 2^{204100211443243} is an apocalyptic number.

204100211443243 is a deficient number, since it is larger than the sum of its proper divisors (12005894790797).

204100211443243 is a wasteful number, since it uses less digits than its factorization.

204100211443243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12005894790796.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 204100211443243 its reverse (342344112001402), we get a palindrome (546444323444645).

The spelling of 204100211443243 in words is "two hundred four trillion, one hundred billion, two hundred eleven million, four hundred forty-three thousand, two hundred forty-three".