20113321 has 8 divisors (see below), whose sum is σ = 20805120. Its totient is φ = 19432608.

The previous prime is 20113319. The next prime is 20113337. The reversal of 20113321 is 12331102.

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 20113321 - 2¹ = 20113319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20113391) 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, 1005 + ... + 6421.

It is an arithmetic number, because the mean of its divisors is an integer number (2600640).

Almost surely, 2^20113321 is an apocalyptic number.

It is an amenable number.

20113321 is a deficient number, since it is larger than the sum of its proper divisors (691799).

20113321 is an equidigital number, since it uses as much as digits as its factorization.

20113321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5543.

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

The square root of 20113321 is about 4484.7877318776. The cubic root of 20113321 is about 271.9534639605.

Adding to 20113321 its reverse (12331102), we get a palindrome (32444423).

The spelling of 20113321 in words is "twenty million, one hundred thirteen thousand, three hundred twenty-one".