11021020021209 has 16 divisors (see below), whose sum is σ = 16049958624000. Its totient is φ = 6671329386960.

The previous prime is 11021020021201. The next prime is 11021020021217. The reversal of 11021020021209 is 90212002012011.

11021020021209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11021020021201) and next prime (11021020021217).

It is not a de Polignac number, because 11021020021209 - 2³ = 11021020021201 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11021020021201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201889459 + ... + 201944040.

It is an arithmetic number, because the mean of its divisors is an integer number (1003122414000).

Almost surely, 2^{11021020021209} is an apocalyptic number.

It is an amenable number.

11021020021209 is a deficient number, since it is larger than the sum of its proper divisors (5028938602791).

11021020021209 is a wasteful number, since it uses less digits than its factorization.

11021020021209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403834340.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 11021020021209 in words is "eleven trillion, twenty-one billion, twenty million, twenty-one thousand, two hundred nine".