11420221243 has 2 divisors, whose sum is σ = 11420221244. Its totient is φ = 11420221242.

The previous prime is 11420221231. The next prime is 11420221271. The reversal of 11420221243 is 34212202411.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11420221243 is a prime.

It is not a weakly prime, because it can be changed into another prime (11420221343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5710110621 + 5710110622.

It is an arithmetic number, because the mean of its divisors is an integer number (5710110622).

Almost surely, 2^11420221243 is an apocalyptic number.

11420221243 is a deficient number, since it is larger than the sum of its proper divisors (1).

11420221243 is an equidigital number, since it uses as much as digits as its factorization.

11420221243 is an evil number, because the sum of its binary digits is even.

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

Adding to 11420221243 its reverse (34212202411), we get a palindrome (45632423654).

The spelling of 11420221243 in words is "eleven billion, four hundred twenty million, two hundred twenty-one thousand, two hundred forty-three".