11121242047 has 2 divisors, whose sum is σ = 11121242048. Its totient is φ = 11121242046.

The previous prime is 11121242009. The next prime is 11121242059. The reversal of 11121242047 is 74024212111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11121242047 - 2¹⁹ = 11120717759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11121242747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560621023 + 5560621024.

It is an arithmetic number, because the mean of its divisors is an integer number (5560621024).

Almost surely, 2^11121242047 is an apocalyptic number.

11121242047 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121242047 is an equidigital number, since it uses as much as digits as its factorization.

11121242047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 11121242047 its reverse (74024212111), we get a palindrome (85145454158).

The spelling of 11121242047 in words is "eleven billion, one hundred twenty-one million, two hundred forty-two thousand, forty-seven".