10243004121 has 20 divisors (see below), whose sum is σ = 17487175552. Its totient is φ = 5853144888.

The previous prime is 10243004117. The next prime is 10243004143. The reversal of 10243004121 is 12140034201.

10243004121 is a `hidden beast` number, since 10 + 243 + 0 + 0 + 412 + 1 = 666.

It is not a de Polignac number, because 10243004121 - 2² = 10243004117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10243004094 and 10243004103.

It is not an unprimeable number, because it can be changed into a prime (10243004521) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9032065 + ... + 9033198.

Almost surely, 2^10243004121 is an apocalyptic number.

It is an amenable number.

10243004121 is a deficient number, since it is larger than the sum of its proper divisors (7244171431).

10243004121 is an equidigital number, since it uses as much as digits as its factorization.

10243004121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18065282 (or 18065273 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 10243004121 its reverse (12140034201), we get a palindrome (22383038322).

The spelling of 10243004121 in words is "ten billion, two hundred forty-three million, four thousand, one hundred twenty-one".