112123201121 has 4 divisors (see below), whose sum is σ = 112231743492. Its totient is φ = 112014658752.

The previous prime is 112123201117. The next prime is 112123201129. The reversal of 112123201121 is 121102321211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49455088225 + 62668112896 = 222385^2 + 250336^2 .

It is a cyclic number.

It is not a de Polignac number, because 112123201121 - 2² = 112123201117 is a prime.

It is a super-2 number, since 2×112123201121² (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 112123201121.

It is not an unprimeable number, because it can be changed into a prime (112123201129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54269636 + ... + 54271701.

It is an arithmetic number, because the mean of its divisors is an integer number (28057935873).

Almost surely, 2^112123201121 is an apocalyptic number.

It is an amenable number.

112123201121 is a deficient number, since it is larger than the sum of its proper divisors (108542371).

112123201121 is a wasteful number, since it uses less digits than its factorization.

112123201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108542370.

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

Adding to 112123201121 its reverse (121102321211), we get a palindrome (233225522332).

The spelling of 112123201121 in words is "one hundred twelve billion, one hundred twenty-three million, two hundred one thousand, one hundred twenty-one".