1303013221321 has 16 divisors (see below), whose sum is σ = 1506109691520. Its totient is φ = 1104179166720.

The previous prime is 1303013221243. The next prime is 1303013221331. The reversal of 1303013221321 is 1231223103031.

It is a de Polignac number, because none of the positive numbers 2^k-1303013221321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1303013221292 and 1303013221301.

It is not an unprimeable number, because it can be changed into a prime (1303013221331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380731 + ... + 1658608.

It is an arithmetic number, because the mean of its divisors is an integer number (94131855720).

Almost surely, 2^{1303013221321} is an apocalyptic number.

It is an amenable number.

1303013221321 is a deficient number, since it is larger than the sum of its proper divisors (203096470199).

1303013221321 is an equidigital number, since it uses as much as digits as its factorization.

1303013221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040384.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1303013221321 its reverse (1231223103031), we get a palindrome (2534236324352).

The spelling of 1303013221321 in words is "one trillion, three hundred three billion, thirteen million, two hundred twenty-one thousand, three hundred twenty-one".