11020021321 has 2 divisors, whose sum is σ = 11020021322. Its totient is φ = 11020021320.

The previous prime is 11020021301. The next prime is 11020021351. The reversal of 11020021321 is 12312002011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10708110400 + 311910921 = 103480^2 + 17661^2 .

It is a cyclic number.

It is not a de Polignac number, because 11020021321 - 2⁷ = 11020021193 is a prime.

It is not a weakly prime, because it can be changed into another prime (11020021301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510010660 + 5510010661.

It is an arithmetic number, because the mean of its divisors is an integer number (5510010661).

Almost surely, 2^11020021321 is an apocalyptic number.

It is an amenable number.

11020021321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020021321 is an equidigital number, since it uses as much as digits as its factorization.

11020021321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11020021321 its reverse (12312002011), we get a palindrome (23332023332).

The spelling of 11020021321 in words is "eleven billion, twenty million, twenty-one thousand, three hundred twenty-one".