5220222251 has 2 divisors, whose sum is σ = 5220222252. Its totient is φ = 5220222250.

The previous prime is 5220222239. The next prime is 5220222253. The reversal of 5220222251 is 1522220225.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5220222251 is a prime.

It is a Sophie Germain prime.

Together with 5220222253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5220222253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610111125 + 2610111126.

It is an arithmetic number, because the mean of its divisors is an integer number (2610111126).

Almost surely, 2^5220222251 is an apocalyptic number.

5220222251 is a deficient number, since it is larger than the sum of its proper divisors (1).

5220222251 is an equidigital number, since it uses as much as digits as its factorization.

5220222251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 5220222251 is about 72251.1055347944. The cubic root of 5220222251 is about 1734.7211140020.

Adding to 5220222251 its reverse (1522220225), we get a palindrome (6742442476).

The spelling of 5220222251 in words is "five billion, two hundred twenty million, two hundred twenty-two thousand, two hundred fifty-one".