1303113131221 has 16 divisors (see below), whose sum is σ = 1425406066560. Its totient is φ = 1181460833280.

The previous prime is 1303113131197. The next prime is 1303113131267. The reversal of 1303113131221 is 1221313113031.

It is a cyclic number.

It is not a de Polignac number, because 1303113131221 - 2⁵ = 1303113131189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1303113131192 and 1303113131201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303113131921) 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, 10075200 + ... + 10203718.

It is an arithmetic number, because the mean of its divisors is an integer number (89087879160).

Almost surely, 2^{1303113131221} is an apocalyptic number.

1303113131221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1303113131221 is a deficient number, since it is larger than the sum of its proper divisors (122292935339).

1303113131221 is a wasteful number, since it uses less digits than its factorization.

1303113131221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131004.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1303113131221 its reverse (1221313113031), we get a palindrome (2524426244252).

The spelling of 1303113131221 in words is "one trillion, three hundred three billion, one hundred thirteen million, one hundred thirty-one thousand, two hundred twenty-one".