112011012121 has 2 divisors, whose sum is σ = 112011012122. Its totient is φ = 112011012120.

The previous prime is 112011012103. The next prime is 112011012143. The reversal of 112011012121 is 121210110211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108343014025 + 3667998096 = 329155^2 + 60564^2 .

It is a cyclic number.

It is not a de Polignac number, because 112011012121 - 2⁵ = 112011012089 is a prime.

It is not a weakly prime, because it can be changed into another prime (112011012101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56005506060 + 56005506061.

It is an arithmetic number, because the mean of its divisors is an integer number (56005506061).

Almost surely, 2^112011012121 is an apocalyptic number.

It is an amenable number.

112011012121 is a deficient number, since it is larger than the sum of its proper divisors (1).

112011012121 is an equidigital number, since it uses as much as digits as its factorization.

112011012121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 112011012121 its reverse (121210110211), we get a palindrome (233221122332).

The spelling of 112011012121 in words is "one hundred twelve billion, eleven million, twelve thousand, one hundred twenty-one".