20323221013 has 16 divisors (see below), whose sum is σ = 21656868480. Its totient is φ = 19005235200.

The previous prime is 20323221011. The next prime is 20323221029. The reversal of 20323221013 is 31012232302.

It is a cyclic number.

It is not a de Polignac number, because 20323221013 - 2¹ = 20323221011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323221011) 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, 2294848 + ... + 2303686.

It is an arithmetic number, because the mean of its divisors is an integer number (1353554280).

Almost surely, 2^20323221013 is an apocalyptic number.

It is an amenable number.

20323221013 is a deficient number, since it is larger than the sum of its proper divisors (1333647467).

20323221013 is a wasteful number, since it uses less digits than its factorization.

20323221013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9708.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20323221013 its reverse (31012232302), we get a palindrome (51335453315).

The spelling of 20323221013 in words is "twenty billion, three hundred twenty-three million, two hundred twenty-one thousand, thirteen".