11241220243 has 4 divisors (see below), whose sum is σ = 12263149368. Its totient is φ = 10219291120.

The previous prime is 11241220213. The next prime is 11241220271. The reversal of 11241220243 is 34202214211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34202214211 = 11 ⋅3109292201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11241220243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11241220213) 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, 510964546 + ... + 510964567.

It is an arithmetic number, because the mean of its divisors is an integer number (3065787342).

Almost surely, 2^11241220243 is an apocalyptic number.

11241220243 is a deficient number, since it is larger than the sum of its proper divisors (1021929125).

11241220243 is a wasteful number, since it uses less digits than its factorization.

11241220243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021929124.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 11241220243 its reverse (34202214211), we get a palindrome (45443434454).

The spelling of 11241220243 in words is "eleven billion, two hundred forty-one million, two hundred twenty thousand, two hundred forty-three".