112505221 has 2 divisors, whose sum is σ = 112505222. Its totient is φ = 112505220.

The previous prime is 112505219. The next prime is 112505227. The reversal of 112505221 is 122505211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106812225 + 5692996 = 10335^2 + 2386^2 .

It is a cyclic number.

It is not a de Polignac number, because 112505221 - 2¹ = 112505219 is a prime.

Together with 112505219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112505227) 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, 56252610 + 56252611.

It is an arithmetic number, because the mean of its divisors is an integer number (56252611).

Almost surely, 2^112505221 is an apocalyptic number.

It is an amenable number.

112505221 is a deficient number, since it is larger than the sum of its proper divisors (1).

112505221 is an equidigital number, since it uses as much as digits as its factorization.

112505221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 112505221 is about 10606.8478352430. The cubic root of 112505221 is about 482.7521600689.

It can be divided in two parts, 11250 and 5221, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 112505221 in words is "one hundred twelve million, five hundred five thousand, two hundred twenty-one".