11020021213 has 2 divisors, whose sum is σ = 11020021214. Its totient is φ = 11020021212.

The previous prime is 11020021193. The next prime is 11020021241. The reversal of 11020021213 is 31212002011.

11020021213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9027470169 + 1992551044 = 95013^2 + 44638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11020021213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11020021193 and 11020021202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11020021253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510010606 + 5510010607.

It is an arithmetic number, because the mean of its divisors is an integer number (5510010607).

Almost surely, 2^11020021213 is an apocalyptic number.

It is an amenable number.

11020021213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020021213 is an equidigital number, since it uses as much as digits as its factorization.

11020021213 is an odious number, because the sum of its binary digits is odd.

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

Adding to 11020021213 its reverse (31212002011), we get a palindrome (42232023224).

The spelling of 11020021213 in words is "eleven billion, twenty million, twenty-one thousand, two hundred thirteen".