11020213409 has 2 divisors, whose sum is σ = 11020213410. Its totient is φ = 11020213408.

The previous prime is 11020213387. The next prime is 11020213423. The reversal of 11020213409 is 90431202011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10983040000 + 37173409 = 104800^2 + 6097^2 .

It is a cyclic number.

It is not a de Polignac number, because 11020213409 - 2⁸ = 11020213153 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11020213439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510106704 + 5510106705.

It is an arithmetic number, because the mean of its divisors is an integer number (5510106705).

Almost surely, 2^11020213409 is an apocalyptic number.

It is an amenable number.

11020213409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020213409 is an equidigital number, since it uses as much as digits as its factorization.

11020213409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 11020213409 in words is "eleven billion, twenty million, two hundred thirteen thousand, four hundred nine".