1300012121321 has 8 divisors (see below), whose sum is σ = 1303814293704. Its totient is φ = 1296214957440.

The previous prime is 1300012121273. The next prime is 1300012121329. The reversal of 1300012121321 is 1231212100031.

It can be written as a sum of positive squares in 4 ways, for example, as 765703752025 + 534308369296 = 875045^2 + 730964^2 .

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 1300012121321 - 2⁶ = 1300012121257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1300012121321.

It is not an unprimeable number, because it can be changed into a prime (1300012121329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 731930 + ... + 1770803.

It is an arithmetic number, because the mean of its divisors is an integer number (162976786713).

Almost surely, 2^{1300012121321} is an apocalyptic number.

It is an amenable number.

1300012121321 is a deficient number, since it is larger than the sum of its proper divisors (3802172383).

1300012121321 is an equidigital number, since it uses as much as digits as its factorization.

1300012121321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504251.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1300012121321 its reverse (1231212100031), we get a palindrome (2531224221352).

The spelling of 1300012121321 in words is "one trillion, three hundred billion, twelve million, one hundred twenty-one thousand, three hundred twenty-one".