42223232251 has 2 divisors, whose sum is σ = 42223232252. Its totient is φ = 42223232250.

The previous prime is 42223232159. The next prime is 42223232257. The reversal of 42223232251 is 15223232224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42223232251 is a prime.

It is not a weakly prime, because it can be changed into another prime (42223232257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21111616125 + 21111616126.

It is an arithmetic number, because the mean of its divisors is an integer number (21111616126).

Almost surely, 2^42223232251 is an apocalyptic number.

42223232251 is a deficient number, since it is larger than the sum of its proper divisors (1).

42223232251 is an equidigital number, since it uses as much as digits as its factorization.

42223232251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 28.

Adding to 42223232251 its reverse (15223232224), we get a palindrome (57446464475).

The spelling of 42223232251 in words is "forty-two billion, two hundred twenty-three million, two hundred thirty-two thousand, two hundred fifty-one".