22202220251 has 2 divisors, whose sum is σ = 22202220252. Its totient is φ = 22202220250.

The previous prime is 22202220223. The next prime is 22202220289. The reversal of 22202220251 is 15202220222.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22202220251 is a prime.

It is not a weakly prime, because it can be changed into another prime (22202220211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11101110125 + 11101110126.

It is an arithmetic number, because the mean of its divisors is an integer number (11101110126).

Almost surely, 2^22202220251 is an apocalyptic number.

22202220251 is a deficient number, since it is larger than the sum of its proper divisors (1).

22202220251 is an equidigital number, since it uses as much as digits as its factorization.

22202220251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 22202220251 its reverse (15202220222), we get a palindrome (37404440473).

The spelling of 22202220251 in words is "twenty-two billion, two hundred two million, two hundred twenty thousand, two hundred fifty-one".