112120181 has 2 divisors, whose sum is σ = 112120182. Its totient is φ = 112120180.

The previous prime is 112120157. The next prime is 112120187. The reversal of 112120181 is 181021211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89605156 + 22515025 = 9466^2 + 4745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112120181 is a prime.

It is a super-2 number, since 2×112120181² = 25141869974945522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112120187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56060090 + 56060091.

It is an arithmetic number, because the mean of its divisors is an integer number (56060091).

Almost surely, 2^112120181 is an apocalyptic number.

It is an amenable number.

112120181 is a deficient number, since it is larger than the sum of its proper divisors (1).

112120181 is an equidigital number, since it uses as much as digits as its factorization.

112120181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

The square root of 112120181 is about 10588.6817404245. The cubic root of 112120181 is about 482.2008038860.

Adding to 112120181 its reverse (181021211), we get a palindrome (293141392).

It can be divided in two parts, 1121 and 20181, that multiplied together give a triangular number (22622901 = T₆₇₂₆).

The spelling of 112120181 in words is "one hundred twelve million, one hundred twenty thousand, one hundred eighty-one".