22304420077 has 2 divisors, whose sum is σ = 22304420078. Its totient is φ = 22304420076.

The previous prime is 22304420071. The next prime is 22304420123. The reversal of 22304420077 is 77002440322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21767756521 + 536663556 = 147539^2 + 23166^2 .

It is a cyclic number.

It is not a de Polignac number, because 22304420077 - 2¹⁵ = 22304387309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22304420071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11152210038 + 11152210039.

It is an arithmetic number, because the mean of its divisors is an integer number (11152210039).

Almost surely, 2^22304420077 is an apocalyptic number.

It is an amenable number.

22304420077 is a deficient number, since it is larger than the sum of its proper divisors (1).

22304420077 is an equidigital number, since it uses as much as digits as its factorization.

22304420077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 31.

Adding to 22304420077 its reverse (77002440322), we get a palindrome (99306860399).

The spelling of 22304420077 in words is "twenty-two billion, three hundred four million, four hundred twenty thousand, seventy-seven".