20244222077 has 2 divisors, whose sum is σ = 20244222078. Its totient is φ = 20244222076.

The previous prime is 20244222017. The next prime is 20244222079. The reversal of 20244222077 is 77022244202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18286071076 + 1958151001 = 135226^2 + 44251^2 .

It is a cyclic number.

It is not a de Polignac number, because 20244222077 - 2³² = 15949254781 is a prime.

Together with 20244222079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20244222079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10122111038 + 10122111039.

It is an arithmetic number, because the mean of its divisors is an integer number (10122111039).

Almost surely, 2^20244222077 is an apocalyptic number.

It is an amenable number.

20244222077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20244222077 is an equidigital number, since it uses as much as digits as its factorization.

20244222077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25088, while the sum is 32.

Adding to 20244222077 its reverse (77022244202), we get a palindrome (97266466279).

The spelling of 20244222077 in words is "twenty billion, two hundred forty-four million, two hundred twenty-two thousand, seventy-seven".