1306112111521 has 8 divisors (see below), whose sum is σ = 1496638080320. Its totient is φ = 1116570773808.

The previous prime is 1306112111503. The next prime is 1306112111527. The reversal of 1306112111521 is 1251112116031.

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

It is not a de Polignac number, because 1306112111521 - 2⁷ = 1306112111393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1306112111527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246154926 + ... + 246160231.

It is an arithmetic number, because the mean of its divisors is an integer number (187079760040).

Almost surely, 2^{1306112111521} is an apocalyptic number.

It is an amenable number.

1306112111521 is a deficient number, since it is larger than the sum of its proper divisors (190525968799).

1306112111521 is an equidigital number, since it uses as much as digits as its factorization.

1306112111521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492315543.

The product of its (nonzero) digits is 360, while the sum is 25.

Adding to 1306112111521 its reverse (1251112116031), we get a palindrome (2557224227552).

The spelling of 1306112111521 in words is "one trillion, three hundred six billion, one hundred twelve million, one hundred eleven thousand, five hundred twenty-one".