204043123229 has 4 divisors (see below), whose sum is σ = 222592498080. Its totient is φ = 185493748380.

The previous prime is 204043123201. The next prime is 204043123279. The reversal of 204043123229 is 922321340402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204043123229 is a prime.

It is a super-2 number, since 2×204043123229² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204043123195 and 204043123204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204043123279) 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, 9274687409 + ... + 9274687430.

It is an arithmetic number, because the mean of its divisors is an integer number (55648124520).

Almost surely, 2^204043123229 is an apocalyptic number.

It is an amenable number.

204043123229 is a deficient number, since it is larger than the sum of its proper divisors (18549374851).

204043123229 is a wasteful number, since it uses less digits than its factorization.

204043123229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18549374850.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 204043123229 in words is "two hundred four billion, forty-three million, one hundred twenty-three thousand, two hundred twenty-nine".