20022210077 has 2 divisors, whose sum is σ = 20022210078. Its totient is φ = 20022210076.

The previous prime is 20022210049. The next prime is 20022210083. The reversal of 20022210077 is 77001222002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17544062116 + 2478147961 = 132454^2 + 49781^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022210077 - 2¹² = 20022205981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20022210017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011105038 + 10011105039.

It is an arithmetic number, because the mean of its divisors is an integer number (10011105039).

Almost surely, 2^20022210077 is an apocalyptic number.

It is an amenable number.

20022210077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022210077 is an equidigital number, since it uses as much as digits as its factorization.

20022210077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 23.

Adding to 20022210077 its reverse (77001222002), we get a palindrome (97023432079).

The spelling of 20022210077 in words is "twenty billion, twenty-two million, two hundred ten thousand, seventy-seven".