22406311121 has 2 divisors, whose sum is σ = 22406311122. Its totient is φ = 22406311120.

The previous prime is 22406311063. The next prime is 22406311159. The reversal of 22406311121 is 12111360422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13880374225 + 8525936896 = 117815^2 + 92336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22406311121 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22406317121) 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, 11203155560 + 11203155561.

It is an arithmetic number, because the mean of its divisors is an integer number (11203155561).

Almost surely, 2^22406311121 is an apocalyptic number.

It is an amenable number.

22406311121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22406311121 is an equidigital number, since it uses as much as digits as its factorization.

22406311121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 22406311121 its reverse (12111360422), we get a palindrome (34517671543).

The spelling of 22406311121 in words is "twenty-two billion, four hundred six million, three hundred eleven thousand, one hundred twenty-one".