11021311121 has 2 divisors, whose sum is σ = 11021311122. Its totient is φ = 11021311120.

The previous prime is 11021311117. The next prime is 11021311141. The reversal of 11021311121 is 12111312011.

11021311121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9513076225 + 1508234896 = 97535^2 + 38836^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021311121 - 2² = 11021311117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11021311096 and 11021311105.

It is not a weakly prime, because it can be changed into another prime (11021311141) 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, 5510655560 + 5510655561.

It is an arithmetic number, because the mean of its divisors is an integer number (5510655561).

Almost surely, 2^11021311121 is an apocalyptic number.

It is an amenable number.

11021311121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021311121 is an equidigital number, since it uses as much as digits as its factorization.

11021311121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11021311121 its reverse (12111312011), we get a palindrome (23132623132).

The spelling of 11021311121 in words is "eleven billion, twenty-one million, three hundred eleven thousand, one hundred twenty-one".