112131022121 has 4 divisors (see below), whose sum is σ = 112134179472. Its totient is φ = 112127864772.

The previous prime is 112131022093. The next prime is 112131022147. The reversal of 112131022121 is 121220131211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121220131211 = 53 ⋅2287172287.

It is a cyclic number.

It is not a de Polignac number, because 112131022121 - 2¹⁸ = 112130759977 is a prime.

It is a super-2 number, since 2×112131022121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 112131022121.

It is not an unprimeable number, because it can be changed into a prime (112131022181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1524791 + ... + 1596636.

It is an arithmetic number, because the mean of its divisors is an integer number (28033544868).

Almost surely, 2^112131022121 is an apocalyptic number.

It is an amenable number.

112131022121 is a deficient number, since it is larger than the sum of its proper divisors (3157351).

112131022121 is an equidigital number, since it uses as much as digits as its factorization.

112131022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157350.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 112131022121 its reverse (121220131211), we get a palindrome (233351153332).

The spelling of 112131022121 in words is "one hundred twelve billion, one hundred thirty-one million, twenty-two thousand, one hundred twenty-one".