204112121420231 has 4 divisors (see below), whose sum is σ = 205670229217464. Its totient is φ = 202554013623000.

The previous prime is 204112121420201. The next prime is 204112121420323. The reversal of 204112121420231 is 132024121211402.

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 204112121420231 - 2⁶ = 204112121420167 is a prime.

It is a super-2 number, since 2×204112121420231² (a number of 29 digits) contains 22 as substring.

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 204112121420231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204112121420201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779053898420 + ... + 779053898681.

It is an arithmetic number, because the mean of its divisors is an integer number (51417557304366).

Almost surely, 2^{204112121420231} is an apocalyptic number.

204112121420231 is a deficient number, since it is larger than the sum of its proper divisors (1558107797233).

204112121420231 is a wasteful number, since it uses less digits than its factorization.

204112121420231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558107797232.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 204112121420231 its reverse (132024121211402), we get a palindrome (336136242631633).

The spelling of 204112121420231 in words is "two hundred four trillion, one hundred twelve billion, one hundred twenty-one million, four hundred twenty thousand, two hundred thirty-one".