22112130121 has 2 divisors, whose sum is σ = 22112130122. Its totient is φ = 22112130120.

The previous prime is 22112130119. The next prime is 22112130133. The reversal of 22112130121 is 12103121122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21454925625 + 657204496 = 146475^2 + 25636^2 .

It is a cyclic number.

It is not a de Polignac number, because 22112130121 - 2¹ = 22112130119 is a prime.

Together with 22112130119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22112130095 and 22112130104.

It is not a weakly prime, because it can be changed into another prime (22112130421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11056065060 + 11056065061.

It is an arithmetic number, because the mean of its divisors is an integer number (11056065061).

Almost surely, 2^22112130121 is an apocalyptic number.

It is an amenable number.

22112130121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22112130121 is an equidigital number, since it uses as much as digits as its factorization.

22112130121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 22112130121 its reverse (12103121122), we get a palindrome (34215251243).

The spelling of 22112130121 in words is "twenty-two billion, one hundred twelve million, one hundred thirty thousand, one hundred twenty-one".