11120212121 has 2 divisors, whose sum is σ = 11120212122. Its totient is φ = 11120212120.

The previous prime is 11120212093. The next prime is 11120212163. The reversal of 11120212121 is 12121202111.

11120212121 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., 8861586496 + 2258625625 = 94136^2 + 47525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11120212121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11120212096 and 11120212105.

It is not a weakly prime, because it can be changed into another prime (11120212021) 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, 5560106060 + 5560106061.

It is an arithmetic number, because the mean of its divisors is an integer number (5560106061).

Almost surely, 2^11120212121 is an apocalyptic number.

It is an amenable number.

11120212121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11120212121 is an equidigital number, since it uses as much as digits as its factorization.

11120212121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11120212121 its reverse (12121202111), we get a palindrome (23241414232).

The spelling of 11120212121 in words is "eleven billion, one hundred twenty million, two hundred twelve thousand, one hundred twenty-one".