20013202321 has 16 divisors (see below), whose sum is σ = 23267865600. Its totient is φ = 16857647568.

The previous prime is 20013202291. The next prime is 20013202327. The reversal of 20013202321 is 12320231002.

It is a cyclic number.

It is not a de Polignac number, because 20013202321 - 2⁵ = 20013202289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20013202295 and 20013202304.

It is not an unprimeable number, because it can be changed into a prime (20013202327) 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, 1554316 + ... + 1567138.

It is an arithmetic number, because the mean of its divisors is an integer number (1454241600).

Almost surely, 2^20013202321 is an apocalyptic number.

It is an amenable number.

20013202321 is a deficient number, since it is larger than the sum of its proper divisors (3254663279).

20013202321 is a wasteful number, since it uses less digits than its factorization.

20013202321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16668.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20013202321 its reverse (12320231002), we get a palindrome (32333433323).

The spelling of 20013202321 in words is "twenty billion, thirteen million, two hundred two thousand, three hundred twenty-one".