22122099977 has 2 divisors, whose sum is σ = 22122099978. Its totient is φ = 22122099976.

The previous prime is 22122099971. The next prime is 22122100027. The reversal of 22122099977 is 77999022122.

It is an a-pointer prime, because the next prime (22122100027) can be obtained adding 22122099977 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21895416841 + 226683136 = 147971^2 + 15056^2 .

It is a cyclic number.

It is not a de Polignac number, because 22122099977 - 2¹⁰ = 22122098953 is a prime.

It is not a weakly prime, because it can be changed into another prime (22122099971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061049988 + 11061049989.

It is an arithmetic number, because the mean of its divisors is an integer number (11061049989).

Almost surely, 2^22122099977 is an apocalyptic number.

It is an amenable number.

22122099977 is a deficient number, since it is larger than the sum of its proper divisors (1).

22122099977 is an equidigital number, since it uses as much as digits as its factorization.

22122099977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 50.

The spelling of 22122099977 in words is "twenty-two billion, one hundred twenty-two million, ninety-nine thousand, nine hundred seventy-seven".