112222261 has 2 divisors, whose sum is σ = 112222262. Its totient is φ = 112222260.

The previous prime is 112222247. The next prime is 112222273. The reversal of 112222261 is 162222211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57002500 + 55219761 = 7550^2 + 7431^2 .

It is a cyclic number.

It is not a de Polignac number, because 112222261 - 2⁷ = 112222133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112220261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56111130 + 56111131.

It is an arithmetic number, because the mean of its divisors is an integer number (56111131).

Almost surely, 2^112222261 is an apocalyptic number.

It is an amenable number.

112222261 is a deficient number, since it is larger than the sum of its proper divisors (1).

112222261 is an equidigital number, since it uses as much as digits as its factorization.

112222261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 112222261 is about 10593.5008849766. The cubic root of 112222261 is about 482.3470996636.

Adding to 112222261 its reverse (162222211), we get a palindrome (274444472).

The spelling of 112222261 in words is "one hundred twelve million, two hundred twenty-two thousand, two hundred sixty-one".