10243111121 has 4 divisors (see below), whose sum is σ = 10266233712. Its totient is φ = 10219988532.

The previous prime is 10243111097. The next prime is 10243111129. The reversal of 10243111121 is 12111134201.

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-10243111121 is a prime.

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 10243111121.

It is not an unprimeable number, because it can be changed into a prime (10243111129) 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, 11560631 + ... + 11561516.

It is an arithmetic number, because the mean of its divisors is an integer number (2566558428).

Almost surely, 2^10243111121 is an apocalyptic number.

It is an amenable number.

10243111121 is a deficient number, since it is larger than the sum of its proper divisors (23122591).

10243111121 is an equidigital number, since it uses as much as digits as its factorization.

10243111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23122590.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 10243111121 its reverse (12111134201), we get a palindrome (22354245322).

The spelling of 10243111121 in words is "ten billion, two hundred forty-three million, one hundred eleven thousand, one hundred twenty-one".