112121110020209 has 2 divisors, whose sum is σ = 112121110020210. Its totient is φ = 112121110020208.

The previous prime is 112121110020203. The next prime is 112121110020391. The reversal of 112121110020209 is 902020011121211.

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., 59728166560000 + 52392943460209 = 7728400^2 + 7238297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112121110020209 is a prime.

It is a super-2 number, since 2×112121110020209² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (112121110020203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56060555010104 + 56060555010105.

It is an arithmetic number, because the mean of its divisors is an integer number (56060555010105).

Almost surely, 2^{112121110020209} is an apocalyptic number.

It is an amenable number.

112121110020209 is a deficient number, since it is larger than the sum of its proper divisors (1).

112121110020209 is an equidigital number, since it uses as much as digits as its factorization.

112121110020209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 112121110020209 in words is "one hundred twelve trillion, one hundred twenty-one billion, one hundred ten million, twenty thousand, two hundred nine".