112190161 has 2 divisors, whose sum is σ = 112190162. Its totient is φ = 112190160.

The previous prime is 112190101. The next prime is 112190171. The reversal of 112190161 is 161091211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99121936 + 13068225 = 9956^2 + 3615^2 .

It is an emirp because it is prime and its reverse (161091211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112190161 is a prime.

It is not a weakly prime, because it can be changed into another prime (112190101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56095080 + 56095081.

It is an arithmetic number, because the mean of its divisors is an integer number (56095081).

Almost surely, 2^112190161 is an apocalyptic number.

It is an amenable number.

112190161 is a deficient number, since it is larger than the sum of its proper divisors (1).

112190161 is an equidigital number, since it uses as much as digits as its factorization.

112190161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 22.

The square root of 112190161 is about 10591.9856967426. The cubic root of 112190161 is about 482.3011051693.

The spelling of 112190161 in words is "one hundred twelve million, one hundred ninety thousand, one hundred sixty-one".