1301323221 has 12 divisors (see below), whose sum is σ = 2050570080. Its totient is φ = 788680680.

The previous prime is 1301323171. The next prime is 1301323223. The reversal of 1301323221 is 1223231031.

It is not a de Polignac number, because 1301323221 - 2¹⁷ = 1301192149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1301323194 and 1301323203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301323223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6572241 + ... + 6572438.

It is an arithmetic number, because the mean of its divisors is an integer number (170880840).

Almost surely, 2^1301323221 is an apocalyptic number.

1301323221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1301323221 is a deficient number, since it is larger than the sum of its proper divisors (749246859).

1301323221 is a wasteful number, since it uses less digits than its factorization.

1301323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13144696 (or 13144693 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1301323221 is about 36073.8578613378. The cubic root of 1301323221 is about 1091.7630533882.

Adding to 1301323221 its reverse (1223231031), we get a palindrome (2524554252).

The spelling of 1301323221 in words is "one billion, three hundred one million, three hundred twenty-three thousand, two hundred twenty-one".