221103007 has 2 divisors, whose sum is σ = 221103008. Its totient is φ = 221103006.

The previous prime is 221102977. The next prime is 221103059. The reversal of 221103007 is 700301122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221103007 - 2⁷ = 221102879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221103307) 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, 110551503 + 110551504.

It is an arithmetic number, because the mean of its divisors is an integer number (110551504).

Almost surely, 2^221103007 is an apocalyptic number.

221103007 is a deficient number, since it is larger than the sum of its proper divisors (1).

221103007 is an equidigital number, since it uses as much as digits as its factorization.

221103007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 221103007 is about 14869.5328440405. The cubic root of 221103007 is about 604.6882778184.

Adding to 221103007 its reverse (700301122), we get a palindrome (921404129).

The spelling of 221103007 in words is "two hundred twenty-one million, one hundred three thousand, seven".