221230007 has 2 divisors, whose sum is σ = 221230008. Its totient is φ = 221230006.

The previous prime is 221230001. The next prime is 221230013. The reversal of 221230007 is 700032122.

It is a balanced prime because it is at equal distance from previous prime (221230001) and next prime (221230013).

It is a cyclic number.

It is not a de Polignac number, because 221230007 - 2⁴ = 221229991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221230001) 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, 110615003 + 110615004.

It is an arithmetic number, because the mean of its divisors is an integer number (110615004).

Almost surely, 2^221230007 is an apocalyptic number.

221230007 is a deficient number, since it is larger than the sum of its proper divisors (1).

221230007 is an equidigital number, since it uses as much as digits as its factorization.

221230007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 221230007 is about 14873.8027081174. The cubic root of 221230007 is about 604.8040318787.

Adding to 221230007 its reverse (700032122), we get a palindrome (921262129).

The spelling of 221230007 in words is "two hundred twenty-one million, two hundred thirty thousand, seven".