16101321 has 8 divisors (see below), whose sum is σ = 21690144. Its totient is φ = 10623360.

The previous prime is 16101317. The next prime is 16101359. The reversal of 16101321 is 12310161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16101321 - 2² = 16101317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16101321.

It is not an unprimeable number, because it can be changed into a prime (16101301) 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, 27375 + ... + 27956.

It is an arithmetic number, because the mean of its divisors is an integer number (2711268).

Almost surely, 2^16101321 is an apocalyptic number.

It is an amenable number.

16101321 is a deficient number, since it is larger than the sum of its proper divisors (5588823).

16101321 is an equidigital number, since it uses as much as digits as its factorization.

16101321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55431.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 16101321 is about 4012.6451375620. The cubic root of 16101321 is about 252.5149930646.

Adding to 16101321 its reverse (12310161), we get a palindrome (28411482).

The spelling of 16101321 in words is "sixteen million, one hundred one thousand, three hundred twenty-one".