221415107 has 2 divisors, whose sum is σ = 221415108. Its totient is φ = 221415106.

The previous prime is 221415071. The next prime is 221415143. The reversal of 221415107 is 701514122.

Together with previous prime (221415071) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (221415071) and next prime (221415143).

It is a cyclic number.

It is not a de Polignac number, because 221415107 - 2¹⁸ = 221152963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221415707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110707553 + 110707554.

It is an arithmetic number, because the mean of its divisors is an integer number (110707554).

Almost surely, 2^221415107 is an apocalyptic number.

221415107 is a deficient number, since it is larger than the sum of its proper divisors (1).

221415107 is an equidigital number, since it uses as much as digits as its factorization.

221415107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 221415107 is about 14880.0237567015. The cubic root of 221415107 is about 604.9726618341.

Adding to 221415107 its reverse (701514122), we get a palindrome (922929229).

The spelling of 221415107 in words is "two hundred twenty-one million, four hundred fifteen thousand, one hundred seven".