112125212161 has 2 divisors, whose sum is σ = 112125212162. Its totient is φ = 112125212160.

The previous prime is 112125212159. The next prime is 112125212167. The reversal of 112125212161 is 161212521211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108834010000 + 3291202161 = 329900^2 + 57369^2 .

It is a cyclic number.

It is not a de Polignac number, because 112125212161 - 2¹ = 112125212159 is a prime.

Together with 112125212159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (112125212167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56062606080 + 56062606081.

It is an arithmetic number, because the mean of its divisors is an integer number (56062606081).

Almost surely, 2^112125212161 is an apocalyptic number.

It is an amenable number.

112125212161 is a deficient number, since it is larger than the sum of its proper divisors (1).

112125212161 is an equidigital number, since it uses as much as digits as its factorization.

112125212161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 25.

Adding to 112125212161 its reverse (161212521211), we get a palindrome (273337733372).

The spelling of 112125212161 in words is "one hundred twelve billion, one hundred twenty-five million, two hundred twelve thousand, one hundred sixty-one".