20321111003 has 2 divisors, whose sum is σ = 20321111004. Its totient is φ = 20321111002.

The previous prime is 20321110993. The next prime is 20321111053. The reversal of 20321111003 is 30011112302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20321111003 - 2¹² = 20321106907 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20321111053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160555501 + 10160555502.

It is an arithmetic number, because the mean of its divisors is an integer number (10160555502).

Almost surely, 2^20321111003 is an apocalyptic number.

20321111003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20321111003 is an equidigital number, since it uses as much as digits as its factorization.

20321111003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20321111003 its reverse (30011112302), we get a palindrome (50332223305).

The spelling of 20321111003 in words is "twenty billion, three hundred twenty-one million, one hundred eleven thousand, three".