112213681 has 2 divisors, whose sum is σ = 112213682. Its totient is φ = 112213680.

The previous prime is 112213657. The next prime is 112213691. The reversal of 112213681 is 186312211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105370225 + 6843456 = 10265^2 + 2616^2 .

It is a cyclic number.

It is not a de Polignac number, because 112213681 - 2⁹ = 112213169 is a prime.

It is a super-2 number, since 2×112213681² = 25183820407139522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (112213691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56106840 + 56106841.

It is an arithmetic number, because the mean of its divisors is an integer number (56106841).

Almost surely, 2^112213681 is an apocalyptic number.

It is an amenable number.

112213681 is a deficient number, since it is larger than the sum of its proper divisors (1).

112213681 is an equidigital number, since it uses as much as digits as its factorization.

112213681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 25.

The square root of 112213681 is about 10593.0959119608. The cubic root of 112213681 is about 482.3348066671.

Adding to 112213681 its reverse (186312211), we get a palindrome (298525892).

The spelling of 112213681 in words is "one hundred twelve million, two hundred thirteen thousand, six hundred eighty-one".