112012212121 has 2 divisors, whose sum is σ = 112012212122. Its totient is φ = 112012212120.

The previous prime is 112012212113. The next prime is 112012212131. The reversal of 112012212121 is 121212210211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110885670025 + 1126542096 = 332995^2 + 33564^2 .

It is a cyclic number.

It is not a de Polignac number, because 112012212121 - 2³ = 112012212113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112012212095 and 112012212104.

It is not a weakly prime, because it can be changed into another prime (112012212131) 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, 56006106060 + 56006106061.

It is an arithmetic number, because the mean of its divisors is an integer number (56006106061).

Almost surely, 2^112012212121 is an apocalyptic number.

It is an amenable number.

112012212121 is a deficient number, since it is larger than the sum of its proper divisors (1).

112012212121 is an equidigital number, since it uses as much as digits as its factorization.

112012212121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 112012212121 its reverse (121212210211), we get a palindrome (233224422332).

The spelling of 112012212121 in words is "one hundred twelve billion, twelve million, two hundred twelve thousand, one hundred twenty-one".