112122122122121 has 4 divisors (see below), whose sum is σ = 112122179157252. Its totient is φ = 112122065086992.

The previous prime is 112122122122081. The next prime is 112122122122291. The reversal of 112122122122121 is 121221221221211.

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 76231670655625 + 35890451466496 = 8731075^2 + 5990864^2 .

It is a cyclic number.

It is not a de Polignac number, because 112122122122121 - 2²² = 112122117927817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (112122122122721) 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, 25459490 + ... + 29536923.

It is an arithmetic number, because the mean of its divisors is an integer number (28030544789313).

Almost surely, 2^{112122122122121} is an apocalyptic number.

It is an amenable number.

112122122122121 is a deficient number, since it is larger than the sum of its proper divisors (57035131).

112122122122121 is an equidigital number, since it uses as much as digits as its factorization.

112122122122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57035130.

The product of its digits is 256, while the sum is 23.

Adding to 112122122122121 its reverse (121221221221211), we get a palindrome (233343343343332).

The spelling of 112122122122121 in words is "one hundred twelve trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".