4221224251 has 2 divisors, whose sum is σ = 4221224252. Its totient is φ = 4221224250.

The previous prime is 4221224239. The next prime is 4221224263. The reversal of 4221224251 is 1524221224.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (4221224239) and next prime (4221224263).

It is a cyclic number.

It is not a de Polignac number, because 4221224251 - 2⁷ = 4221224123 is a prime.

It is a super-2 number, since 2×4221224251² = 35637468354461022002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4221222251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110612125 + 2110612126.

It is an arithmetic number, because the mean of its divisors is an integer number (2110612126).

Almost surely, 2^4221224251 is an apocalyptic number.

4221224251 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221224251 is an equidigital number, since it uses as much as digits as its factorization.

4221224251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2560, while the sum is 25.

The square root of 4221224251 is about 64970.9492850459. The cubic root of 4221224251 is about 1616.1418439186.

Adding to 4221224251 its reverse (1524221224), we get a palindrome (5745445475).

The spelling of 4221224251 in words is "four billion, two hundred twenty-one million, two hundred twenty-four thousand, two hundred fifty-one".