20022022177 has 2 divisors, whose sum is σ = 20022022178. Its totient is φ = 20022022176.

The previous prime is 20022022171. The next prime is 20022022247. The reversal of 20022022177 is 77122022002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19993677201 + 28344976 = 141399^2 + 5324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20022022177 is a prime.

It is not a weakly prime, because it can be changed into another prime (20022022171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011011088 + 10011011089.

It is an arithmetic number, because the mean of its divisors is an integer number (10011011089).

Almost surely, 2^20022022177 is an apocalyptic number.

It is an amenable number.

20022022177 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022022177 is an equidigital number, since it uses as much as digits as its factorization.

20022022177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 25.

Adding to 20022022177 its reverse (77122022002), we get a palindrome (97144044179).

The spelling of 20022022177 in words is "twenty billion, twenty-two million, twenty-two thousand, one hundred seventy-seven".