11021700209 has 12 divisors (see below), whose sum is σ = 11962382796. Its totient is φ = 10150313472.

The previous prime is 11021700199. The next prime is 11021700269. The reversal of 11021700209 is 90200712011.

It can be written as a sum of positive squares in 6 ways, for example, as 7010377984 + 4011322225 = 83728^2 + 63335^2 .

It is not a de Polignac number, because 11021700209 - 2²⁴ = 11004922993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11021700269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2132 + ... + 148485.

It is an arithmetic number, because the mean of its divisors is an integer number (996865233).

Almost surely, 2^11021700209 is an apocalyptic number.

It is an amenable number.

11021700209 is a deficient number, since it is larger than the sum of its proper divisors (940682587).

11021700209 is a wasteful number, since it uses less digits than its factorization.

11021700209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151076 (or 151063 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 23.

The spelling of 11021700209 in words is "eleven billion, twenty-one million, seven hundred thousand, two hundred nine".