22111209077 has 2 divisors, whose sum is σ = 22111209078. Its totient is φ = 22111209076.

The previous prime is 22111209053. The next prime is 22111209083. The reversal of 22111209077 is 77090211122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22006535716 + 104673361 = 148346^2 + 10231^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111209077 - 2⁶ = 22111209013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22111209037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055604538 + 11055604539.

It is an arithmetic number, because the mean of its divisors is an integer number (11055604539).

Almost surely, 2^22111209077 is an apocalyptic number.

It is an amenable number.

22111209077 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111209077 is an equidigital number, since it uses as much as digits as its factorization.

22111209077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 32.

The spelling of 22111209077 in words is "twenty-two billion, one hundred eleven million, two hundred nine thousand, seventy-seven".