22011321121 has 2 divisors, whose sum is σ = 22011321122. Its totient is φ = 22011321120.

The previous prime is 22011321113. The next prime is 22011321139. The reversal of 22011321121 is 12112311022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11182005025 + 10829316096 = 105745^2 + 104064^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011321121 - 2³ = 22011321113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22011321095 and 22011321104.

It is not a weakly prime, because it can be changed into another prime (22011321151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005660560 + 11005660561.

It is an arithmetic number, because the mean of its divisors is an integer number (11005660561).

Almost surely, 2^22011321121 is an apocalyptic number.

It is an amenable number.

22011321121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22011321121 is an equidigital number, since it uses as much as digits as its factorization.

22011321121 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 22011321121 its reverse (12112311022), we get a palindrome (34123632143).

The spelling of 22011321121 in words is "twenty-two billion, eleven million, three hundred twenty-one thousand, one hundred twenty-one".