20113200321 has 16 divisors (see below), whose sum is σ = 27018081600. Its totient is φ = 13308779520.

The previous prime is 20113200269. The next prime is 20113200323. The reversal of 20113200321 is 12300231102.

It is not a de Polignac number, because 20113200321 - 2¹⁵ = 20113167553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20113200321.

It is not an unprimeable number, because it can be changed into a prime (20113200323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345105 + ... + 399153.

It is an arithmetic number, because the mean of its divisors is an integer number (1688630100).

Almost surely, 2^20113200321 is an apocalyptic number.

It is an amenable number.

20113200321 is a deficient number, since it is larger than the sum of its proper divisors (6904881279).

20113200321 is a wasteful number, since it uses less digits than its factorization.

20113200321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54976.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20113200321 its reverse (12300231102), we get a palindrome (32413431423).

The spelling of 20113200321 in words is "twenty billion, one hundred thirteen million, two hundred thousand, three hundred twenty-one".