22431000121 has 2 divisors, whose sum is σ = 22431000122. Its totient is φ = 22431000120.

The previous prime is 22431000077. The next prime is 22431000133. The reversal of 22431000121 is 12100013422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22144713721 + 286286400 = 148811^2 + 16920^2 .

It is a cyclic number.

It is not a de Polignac number, because 22431000121 - 2¹⁵ = 22430967353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22431000095 and 22431000104.

It is not a weakly prime, because it can be changed into another prime (22431000161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11215500060 + 11215500061.

It is an arithmetic number, because the mean of its divisors is an integer number (11215500061).

Almost surely, 2^22431000121 is an apocalyptic number.

It is an amenable number.

22431000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22431000121 is an equidigital number, since it uses as much as digits as its factorization.

22431000121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22431000121 its reverse (12100013422), we get a palindrome (34531013543).

The spelling of 22431000121 in words is "twenty-two billion, four hundred thirty-one million, one hundred twenty-one", and thus it is an aban number.