1312122331121 has 8 divisors (see below), whose sum is σ = 1578493030080. Its totient is φ = 1065482795088.

The previous prime is 1312122331099. The next prime is 1312122331151. The reversal of 1312122331121 is 1211332212131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312122331121 - 2⁶ = 1312122331057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312122331151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4932790586 + ... + 4932790851.

It is an arithmetic number, because the mean of its divisors is an integer number (197311628760).

Almost surely, 2^{1312122331121} is an apocalyptic number.

It is an amenable number.

1312122331121 is a deficient number, since it is larger than the sum of its proper divisors (266370698959).

1312122331121 is an equidigital number, since it uses as much as digits as its factorization.

1312122331121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9865581463.

The product of its digits is 432, while the sum is 23.

Adding to 1312122331121 its reverse (1211332212131), we get a palindrome (2523454543252).

The spelling of 1312122331121 in words is "one trillion, three hundred twelve billion, one hundred twenty-two million, three hundred thirty-one thousand, one hundred twenty-one".