221426003611 has 2 divisors, whose sum is σ = 221426003612. Its totient is φ = 221426003610.

The previous prime is 221426003567. The next prime is 221426003633. The reversal of 221426003611 is 116300624122.

221426003611 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 221426003611 - 2¹⁹ = 221425479323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221426003611.

It is not a weakly prime, because it can be changed into another prime (221426003111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110713001805 + 110713001806.

It is an arithmetic number, because the mean of its divisors is an integer number (110713001806).

Almost surely, 2^221426003611 is an apocalyptic number.

221426003611 is a deficient number, since it is larger than the sum of its proper divisors (1).

221426003611 is an equidigital number, since it uses as much as digits as its factorization.

221426003611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 221426003611 its reverse (116300624122), we get a palindrome (337726627733).

The spelling of 221426003611 in words is "two hundred twenty-one billion, four hundred twenty-six million, three thousand, six hundred eleven".