221230127 has 2 divisors, whose sum is σ = 221230128. Its totient is φ = 221230126.

The previous prime is 221230073. The next prime is 221230159. The reversal of 221230127 is 721032122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221230127 - 2⁸ = 221229871 is a prime.

It is a super-2 number, since 2×221230127² = 97885538184872258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221230099 and 221230108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221230187) 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, 110615063 + 110615064.

It is an arithmetic number, because the mean of its divisors is an integer number (110615064).

Almost surely, 2^221230127 is an apocalyptic number.

221230127 is a deficient number, since it is larger than the sum of its proper divisors (1).

221230127 is an equidigital number, since it uses as much as digits as its factorization.

221230127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 221230127 is about 14873.8067420550. The cubic root of 221230127 is about 604.8041412316.

Adding to 221230127 its reverse (721032122), we get a palindrome (942262249).

The spelling of 221230127 in words is "two hundred twenty-one million, two hundred thirty thousand, one hundred twenty-seven".