1312303121121 has 32 divisors (see below), whose sum is σ = 1796785493760. Its totient is φ = 851682585600.

The previous prime is 1312303121117. The next prime is 1312303121153. The reversal of 1312303121121 is 1211213032131.

It is not a de Polignac number, because 1312303121121 - 2² = 1312303121117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312303121161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13848261 + ... + 13942701.

It is an arithmetic number, because the mean of its divisors is an integer number (56149546680).

Almost surely, 2^{1312303121121} is an apocalyptic number.

It is an amenable number.

1312303121121 is a deficient number, since it is larger than the sum of its proper divisors (484482372639).

1312303121121 is an equidigital number, since it uses as much as digits as its factorization.

1312303121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95337.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1312303121121 its reverse (1211213032131), we get a palindrome (2523516153252).

The spelling of 1312303121121 in words is "one trillion, three hundred twelve billion, three hundred three million, one hundred twenty-one thousand, one hundred twenty-one".