11000021321 has 2 divisors, whose sum is σ = 11000021322. Its totient is φ = 11000021320.

The previous prime is 11000021299. The next prime is 11000021339. The reversal of 11000021321 is 12312000011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9099061321 + 1900960000 = 95389^2 + 43600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11000021321 is a prime.

It is not a weakly prime, because it can be changed into another prime (11000021371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500010660 + 5500010661.

It is an arithmetic number, because the mean of its divisors is an integer number (5500010661).

Almost surely, 2^11000021321 is an apocalyptic number.

It is an amenable number.

11000021321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000021321 is an equidigital number, since it uses as much as digits as its factorization.

11000021321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 11000021321 its reverse (12312000011), we get a palindrome (23312021332).

The spelling of 11000021321 in words is "eleven billion, twenty-one thousand, three hundred twenty-one".