4221263 has 2 divisors, whose sum is σ = 4221264. Its totient is φ = 4221262.

The previous prime is 4221247. The next prime is 4221271. The reversal of 4221263 is 3621224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4221263 - 2⁴ = 4221247 is a prime.

It is a super-2 number, since 2×4221263² = 35638122630338, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4221223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110631 + 2110632.

It is an arithmetic number, because the mean of its divisors is an integer number (2110632).

Almost surely, 2^4221263 is an apocalyptic number.

4221263 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221263 is an equidigital number, since it uses as much as digits as its factorization.

4221263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 20.

The square root of 4221263 is about 2054.5712448100. The cubic root of 4221263 is about 161.6146789063.

Adding to 4221263 its reverse (3621224), we get a palindrome (7842487).

The spelling of 4221263 in words is "four million, two hundred twenty-one thousand, two hundred sixty-three".