11211002109 has 12 divisors (see below), whose sum is σ = 16631336956. Its totient is φ = 7272001152.

The previous prime is 11211002093. The next prime is 11211002113. The reversal of 11211002109 is 90120011211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6614568900 + 4596433209 = 81330^2 + 67797^2 .

It is not a de Polignac number, because 11211002109 - 2⁴ = 11211002093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211002091 and 11211002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211002609) 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, 16833004 + ... + 16833669.

Almost surely, 2^11211002109 is an apocalyptic number.

It is an amenable number.

11211002109 is a deficient number, since it is larger than the sum of its proper divisors (5420334847).

11211002109 is a wasteful number, since it uses less digits than its factorization.

11211002109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33666716 (or 33666713 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 11211002109 in words is "eleven billion, two hundred eleven million, two thousand, one hundred nine".