20113332321 has 8 divisors (see below), whose sum is σ = 27471868704. Its totient is φ = 13081842080.

The previous prime is 20113332319. The next prime is 20113332359. The reversal of 20113332321 is 12323331102.

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 20113332321 - 2¹ = 20113332319 is a prime.

It is a super-2 number, since 2×20113332321² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20113332391) 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, 81761391 + ... + 81761636.

It is an arithmetic number, because the mean of its divisors is an integer number (3433983588).

Almost surely, 2^20113332321 is an apocalyptic number.

It is an amenable number.

20113332321 is a deficient number, since it is larger than the sum of its proper divisors (7358536383).

20113332321 is a wasteful number, since it uses less digits than its factorization.

20113332321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163523071.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20113332321 its reverse (12323331102), we get a palindrome (32436663423).

It can be divided in two parts, 20113332 and 321, that added together give a triangular number (20113653 = T₆₃₄₂).

The spelling of 20113332321 in words is "twenty billion, one hundred thirteen million, three hundred thirty-two thousand, three hundred twenty-one".