1311253060121 has 8 divisors (see below), whose sum is σ = 1317185409384. Its totient is φ = 1305323315200.

The previous prime is 1311253060111. The next prime is 1311253060129. The reversal of 1311253060121 is 1210603521131.

It can be written as a sum of positive squares in 4 ways, for example, as 20164000000 + 1291089060121 = 142000^2 + 1136261^2 .

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 1311253060121 - 2¹⁰ = 1311253059097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311253060129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361721 + ... + 1659321.

It is an arithmetic number, because the mean of its divisors is an integer number (164648176173).

Almost surely, 2^{1311253060121} is an apocalyptic number.

It is an amenable number.

1311253060121 is a deficient number, since it is larger than the sum of its proper divisors (5932349263).

1311253060121 is a wasteful number, since it uses less digits than its factorization.

1311253060121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302171.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 1311253060121 its reverse (1210603521131), we get a palindrome (2521856581252).

The spelling of 1311253060121 in words is "one trillion, three hundred eleven billion, two hundred fifty-three million, sixty thousand, one hundred twenty-one".