20301021321 has 16 divisors (see below), whose sum is σ = 30940683264. Its totient is φ = 11598411024.

The previous prime is 20301021289. The next prime is 20301021331. The reversal of 20301021321 is 12312010302.

It is not a de Polignac number, because 20301021321 - 2⁵ = 20301021289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20301021321.

It is not an unprimeable number, because it can be changed into a prime (20301021331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27876 + ... + 203418.

It is an arithmetic number, because the mean of its divisors is an integer number (1933792704).

Almost surely, 2^20301021321 is an apocalyptic number.

20301021321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20301021321 is a deficient number, since it is larger than the sum of its proper divisors (10639661943).

20301021321 is a wasteful number, since it uses less digits than its factorization.

20301021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181060.

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

Adding to 20301021321 its reverse (12312010302), we get a palindrome (32613031623).

The spelling of 20301021321 in words is "twenty billion, three hundred one million, twenty-one thousand, three hundred twenty-one".