11221404787 has 2 divisors, whose sum is σ = 11221404788. Its totient is φ = 11221404786.

The previous prime is 11221404721. The next prime is 11221404827. The reversal of 11221404787 is 78740412211.

11221404787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11221404787 - 2¹¹ = 11221402739 is a prime.

It is not a weakly prime, because it can be changed into another prime (11221401787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610702393 + 5610702394.

It is an arithmetic number, because the mean of its divisors is an integer number (5610702394).

Almost surely, 2^11221404787 is an apocalyptic number.

11221404787 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221404787 is an equidigital number, since it uses as much as digits as its factorization.

11221404787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25088, while the sum is 37.

Adding to 11221404787 its reverse (78740412211), we get a palindrome (89961816998).

The spelling of 11221404787 in words is "eleven billion, two hundred twenty-one million, four hundred four thousand, seven hundred eighty-seven".