20022341257 has 2 divisors, whose sum is σ = 20022341258. Its totient is φ = 20022341256.

The previous prime is 20022341237. The next prime is 20022341263. The reversal of 20022341257 is 75214322002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19739126016 + 283215241 = 140496^2 + 16829^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20022341257 is a prime.

It is not a weakly prime, because it can be changed into another prime (20022341237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011170628 + 10011170629.

It is an arithmetic number, because the mean of its divisors is an integer number (10011170629).

Almost surely, 2^20022341257 is an apocalyptic number.

It is an amenable number.

20022341257 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022341257 is an equidigital number, since it uses as much as digits as its factorization.

20022341257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 28.

Adding to 20022341257 its reverse (75214322002), we get a palindrome (95236663259).

The spelling of 20022341257 in words is "twenty billion, twenty-two million, three hundred forty-one thousand, two hundred fifty-seven".