20600001321 has 16 divisors (see below), whose sum is σ = 28109954880. Its totient is φ = 13415409920.

The previous prime is 20600001319. The next prime is 20600001353. The reversal of 20600001321 is 12310000602.

It is a cyclic number.

It is not a de Polignac number, because 20600001321 - 2¹ = 20600001319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20600001321.

It is not an unprimeable number, because it can be changed into a prime (20600041321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442620 + ... + 486941.

It is an arithmetic number, because the mean of its divisors is an integer number (1756872180).

Almost surely, 2^20600001321 is an apocalyptic number.

It is an amenable number.

20600001321 is a deficient number, since it is larger than the sum of its proper divisors (7509953559).

20600001321 is an equidigital number, since it uses as much as digits as its factorization.

20600001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929736.

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

Adding to 20600001321 its reverse (12310000602), we get a palindrome (32910001923).

The spelling of 20600001321 in words is "twenty billion, six hundred million, one thousand, three hundred twenty-one".