1311230502121 has 8 divisors (see below), whose sum is σ = 1321969711104. Its totient is φ = 1300497770880.

The previous prime is 1311230502083. The next prime is 1311230502137. The reversal of 1311230502121 is 1212050321131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311230502121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311230502092 and 1311230502101.

It is not an unprimeable number, because it can be changed into a prime (1311230502151) 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, 1212520 + ... + 2023033.

It is an arithmetic number, because the mean of its divisors is an integer number (165246213888).

Almost surely, 2^{1311230502121} is an apocalyptic number.

It is an amenable number.

1311230502121 is a deficient number, since it is larger than the sum of its proper divisors (10739208983).

1311230502121 is a wasteful number, since it uses less digits than its factorization.

1311230502121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238871.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 1311230502121 its reverse (1212050321131), we get a palindrome (2523280823252).

The spelling of 1311230502121 in words is "one trillion, three hundred eleven billion, two hundred thirty million, five hundred two thousand, one hundred twenty-one".