11021200009 has 2 divisors, whose sum is σ = 11021200010. Its totient is φ = 11021200008.

The previous prime is 11021199997. The next prime is 11021200013. The reversal of 11021200009 is 90000212011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10907713600 + 113486409 = 104440^2 + 10653^2 .

It is an emirp because it is prime and its reverse (90000212011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11021200009 - 2²⁵ = 10987645577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11021199965 and 11021200001.

It is not a weakly prime, because it can be changed into another prime (11021200109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510600004 + 5510600005.

It is an arithmetic number, because the mean of its divisors is an integer number (5510600005).

Almost surely, 2^11021200009 is an apocalyptic number.

It is an amenable number.

11021200009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021200009 is an equidigital number, since it uses as much as digits as its factorization.

11021200009 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 16.

The spelling of 11021200009 in words is "eleven billion, twenty-one million, two hundred thousand, nine".