112131121 has 2 divisors, whose sum is σ = 112131122. Its totient is φ = 112131120.

The previous prime is 112131119. The next prime is 112131157. The reversal of 112131121 is 121131211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90041121 + 22090000 = 9489^2 + 4700^2 .

It is an emirp because it is prime and its reverse (121131211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 112131121 - 2¹ = 112131119 is a prime.

Together with 112131119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (112131181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56065560 + 56065561.

It is an arithmetic number, because the mean of its divisors is an integer number (56065561).

Almost surely, 2^112131121 is an apocalyptic number.

It is an amenable number.

112131121 is a deficient number, since it is larger than the sum of its proper divisors (1).

112131121 is an equidigital number, since it uses as much as digits as its factorization.

112131121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12, while the sum is 13.

The square root of 112131121 is about 10589.1983171532. The cubic root of 112131121 is about 482.2164867755.

Adding to 112131121 its reverse (121131211), we get a palindrome (233262332).

The spelling of 112131121 in words is "one hundred twelve million, one hundred thirty-one thousand, one hundred twenty-one".