4221646127 has 2 divisors, whose sum is σ = 4221646128. Its totient is φ = 4221646126.

The previous prime is 4221646103. The next prime is 4221646129. The reversal of 4221646127 is 7216461224.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4221646127 - 2²⁸ = 3953210671 is a prime.

It is a super-2 number, since 2×4221646127² = 35644592043228200258, which contains 22 as substring.

Together with 4221646129, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4221646129) 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, 2110823063 + 2110823064.

It is an arithmetic number, because the mean of its divisors is an integer number (2110823064).

Almost surely, 2^4221646127 is an apocalyptic number.

4221646127 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221646127 is an equidigital number, since it uses as much as digits as its factorization.

4221646127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 35.

The square root of 4221646127 is about 64974.1958549700. The cubic root of 4221646127 is about 1616.1956820710.

The spelling of 4221646127 in words is "four billion, two hundred twenty-one million, six hundred forty-six thousand, one hundred twenty-seven".