22111566677 has 2 divisors, whose sum is σ = 22111566678. Its totient is φ = 22111566676.

The previous prime is 22111566643. The next prime is 22111566739. The reversal of 22111566677 is 77666511122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14359468561 + 7752098116 = 119831^2 + 88046^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111566677 - 2¹² = 22111562581 is a prime.

It is a super-2 number, since 2×22111566677² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22111566637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055783338 + 11055783339.

It is an arithmetic number, because the mean of its divisors is an integer number (11055783339).

Almost surely, 2^22111566677 is an apocalyptic number.

It is an amenable number.

22111566677 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111566677 is an equidigital number, since it uses as much as digits as its factorization.

22111566677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 44.

The spelling of 22111566677 in words is "twenty-two billion, one hundred eleven million, five hundred sixty-six thousand, six hundred seventy-seven".