13201321 has 8 divisors (see below), whose sum is σ = 15128064. Its totient is φ = 11284800.

The previous prime is 13201291. The next prime is 13201327. The reversal of 13201321 is 12310231.

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 13201321 - 2¹³ = 13193129 is a prime.

It is a super-2 number, since 2×13201321² = 348549752290082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13201327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456 + ... + 5158.

It is an arithmetic number, because the mean of its divisors is an integer number (1891008).

Almost surely, 2^13201321 is an apocalyptic number.

It is an amenable number.

13201321 is a deficient number, since it is larger than the sum of its proper divisors (1926743).

13201321 is an equidigital number, since it uses as much as digits as its factorization.

13201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 13201321 is about 3633.3622170106. The cubic root of 13201321 is about 236.3410335702.

Adding to 13201321 its reverse (12310231), we get a palindrome (25511552).

The spelling of 13201321 in words is "thirteen million, two hundred one thousand, three hundred twenty-one".