20222066677 has 2 divisors, whose sum is σ = 20222066678. Its totient is φ = 20222066676.

The previous prime is 20222066659. The next prime is 20222066701. The reversal of 20222066677 is 77666022202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10525528836 + 9696537841 = 102594^2 + 98471^2 .

It is a cyclic number.

It is not a de Polignac number, because 20222066677 - 2³¹ = 18074583029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20222066077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111033338 + 10111033339.

It is an arithmetic number, because the mean of its divisors is an integer number (10111033339).

Almost surely, 2^20222066677 is an apocalyptic number.

It is an amenable number.

20222066677 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222066677 is an equidigital number, since it uses as much as digits as its factorization.

20222066677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 40.

Adding to 20222066677 its reverse (77666022202), we get a palindrome (97888088879).

The spelling of 20222066677 in words is "twenty billion, two hundred twenty-two million, sixty-six thousand, six hundred seventy-seven".