22022201977 has 2 divisors, whose sum is σ = 22022201978. Its totient is φ = 22022201976.

The previous prime is 22022201969. The next prime is 22022202001. The reversal of 22022201977 is 77910222022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20921886736 + 1100315241 = 144644^2 + 33171^2 .

It is a cyclic number.

It is not a de Polignac number, because 22022201977 - 2³ = 22022201969 is a prime.

It is not a weakly prime, because it can be changed into another prime (22022201177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011100988 + 11011100989.

It is an arithmetic number, because the mean of its divisors is an integer number (11011100989).

Almost surely, 2^22022201977 is an apocalyptic number.

It is an amenable number.

22022201977 is a deficient number, since it is larger than the sum of its proper divisors (1).

22022201977 is an equidigital number, since it uses as much as digits as its factorization.

22022201977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 34.

Adding to 22022201977 its reverse (77910222022), we get a palindrome (99932423999).

The spelling of 22022201977 in words is "twenty-two billion, twenty-two million, two hundred one thousand, nine hundred seventy-seven".