20001301321 has 4 divisors (see below), whose sum is σ = 20002547152. Its totient is φ = 20000055492.

The previous prime is 20001301301. The next prime is 20001301337. The reversal of 20001301321 is 12310310002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20001301321 - 2¹³ = 20001293129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001301301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598515 + ... + 631048.

It is an arithmetic number, because the mean of its divisors is an integer number (5000636788).

Almost surely, 2^20001301321 is an apocalyptic number.

It is an amenable number.

20001301321 is a deficient number, since it is larger than the sum of its proper divisors (1245831).

20001301321 is a wasteful number, since it uses less digits than its factorization.

20001301321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245830.

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

Adding to 20001301321 its reverse (12310310002), we get a palindrome (32311611323).

The spelling of 20001301321 in words is "twenty billion, one million, three hundred one thousand, three hundred twenty-one".