1312303002121 has 4 divisors (see below), whose sum is σ = 1381371581200. Its totient is φ = 1243234423044.

The previous prime is 1312303002107. The next prime is 1312303002149. The reversal of 1312303002121 is 1212003032131.

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 a cyclic number.

It is not a de Polignac number, because 1312303002121 - 2¹³ = 1312302993929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 69068579059 = 1312303002121 / (1 + 3 + 1 + 2 + 3 + 0 + 3 + 0 + 0 + 2 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312303002221) 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, 34534289511 + ... + 34534289548.

It is an arithmetic number, because the mean of its divisors is an integer number (345342895300).

Almost surely, 2^{1312303002121} is an apocalyptic number.

It is an amenable number.

1312303002121 is a deficient number, since it is larger than the sum of its proper divisors (69068579079).

1312303002121 is an equidigital number, since it uses as much as digits as its factorization.

1312303002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69068579078.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1312303002121 its reverse (1212003032131), we get a palindrome (2524306034252).

The spelling of 1312303002121 in words is "one trillion, three hundred twelve billion, three hundred three million, two thousand, one hundred twenty-one".