22423020121 has 2 divisors, whose sum is σ = 22423020122. Its totient is φ = 22423020120.

The previous prime is 22423020097. The next prime is 22423020131. The reversal of 22423020121 is 12102032422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17344890000 + 5078130121 = 131700^2 + 71261^2 .

It is a cyclic number.

It is not a de Polignac number, because 22423020121 - 2¹¹ = 22423018073 is a prime.

It is not a weakly prime, because it can be changed into another prime (22423020131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11211510060 + 11211510061.

It is an arithmetic number, because the mean of its divisors is an integer number (11211510061).

Almost surely, 2^22423020121 is an apocalyptic number.

It is an amenable number.

22423020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22423020121 is an equidigital number, since it uses as much as digits as its factorization.

22423020121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22423020121 its reverse (12102032422), we get a palindrome (34525052543).

The spelling of 22423020121 in words is "twenty-two billion, four hundred twenty-three million, twenty thousand, one hundred twenty-one".