20032211321 has 4 divisors (see below), whose sum is σ = 20060788644. Its totient is φ = 20003634000.

The previous prime is 20032211281. The next prime is 20032211351. The reversal of 20032211321 is 12311223002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9615763600 + 10416447721 = 98060^2 + 102061^2 .

It is a cyclic number.

It is not a de Polignac number, because 20032211321 - 2⁶ = 20032211257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20032211321.

It is not an unprimeable number, because it can be changed into a prime (20032211351) 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, 14287610 + ... + 14289011.

It is an arithmetic number, because the mean of its divisors is an integer number (5015197161).

Almost surely, 2^20032211321 is an apocalyptic number.

It is an amenable number.

20032211321 is a deficient number, since it is larger than the sum of its proper divisors (28577323).

20032211321 is an equidigital number, since it uses as much as digits as its factorization.

20032211321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28577322.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20032211321 its reverse (12311223002), we get a palindrome (32343434323).

The spelling of 20032211321 in words is "twenty billion, thirty-two million, two hundred eleven thousand, three hundred twenty-one".