11243242121 has 8 divisors (see below), whose sum is σ = 11517722304. Its totient is φ = 10969353360.

The previous prime is 11243242093. The next prime is 11243242123. The reversal of 11243242121 is 12124234211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11243242121 - 2¹⁸ = 11242979977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11243242123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109250 + ... + 185531.

It is an arithmetic number, because the mean of its divisors is an integer number (1439715288).

Almost surely, 2^11243242121 is an apocalyptic number.

It is an amenable number.

11243242121 is a deficient number, since it is larger than the sum of its proper divisors (274480183).

11243242121 is an equidigital number, since it uses as much as digits as its factorization.

11243242121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295711.

The product of its digits is 768, while the sum is 23.

Adding to 11243242121 its reverse (12124234211), we get a palindrome (23367476332).

The spelling of 11243242121 in words is "eleven billion, two hundred forty-three million, two hundred forty-two thousand, one hundred twenty-one".