1312130230121 has 4 divisors (see below), whose sum is σ = 1312343140752. Its totient is φ = 1311917319492.

The previous prime is 1312130230079. The next prime is 1312130230163. The reversal of 1312130230121 is 1210320312131.

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.

It is an interprime number because it is at equal distance from previous prime (1312130230079) and next prime (1312130230163).

It is a cyclic number.

It is not a de Polignac number, because 1312130230121 - 2³⁰ = 1311056488297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312130230093 and 1312130230102.

It is not an unprimeable number, because it can be changed into a prime (1312130238121) 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, 106446071 + ... + 106458396.

It is an arithmetic number, because the mean of its divisors is an integer number (328085785188).

Almost surely, 2^{1312130230121} is an apocalyptic number.

It is an amenable number.

1312130230121 is a deficient number, since it is larger than the sum of its proper divisors (212910631).

1312130230121 is an equidigital number, since it uses as much as digits as its factorization.

1312130230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212910630.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1312130230121 its reverse (1210320312131), we get a palindrome (2522450542252).

The spelling of 1312130230121 in words is "one trillion, three hundred twelve billion, one hundred thirty million, two hundred thirty thousand, one hundred twenty-one".