1323310221 has 12 divisors (see below), whose sum is σ = 1994554848. Its totient is φ = 843849864.

The previous prime is 1323310211. The next prime is 1323310349. The reversal of 1323310221 is 1220133231.

1323310221 is a `hidden beast` number, since 132 + 3 + 310 + 221 = 666.

It is not a de Polignac number, because 1323310221 - 2⁵ = 1323310189 is a prime.

It is a super-2 number, since 2×1323310221² = 3502299882006137682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1323310194 and 1323310203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323310211) 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, 3196195 + ... + 3196608.

It is an arithmetic number, because the mean of its divisors is an integer number (166212904).

Almost surely, 2^1323310221 is an apocalyptic number.

It is an amenable number.

1323310221 is a deficient number, since it is larger than the sum of its proper divisors (671244627).

1323310221 is a wasteful number, since it uses less digits than its factorization.

1323310221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6392832 (or 6392829 counting only the distinct ones).

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

The square root of 1323310221 is about 36377.3311417976. The cubic root of 1323310221 is about 1097.8775107968.

Adding to 1323310221 its reverse (1220133231), we get a palindrome (2543443452).

The spelling of 1323310221 in words is "one billion, three hundred twenty-three million, three hundred ten thousand, two hundred twenty-one".