11122001209 has 4 divisors (see below), whose sum is σ = 12133092240. Its totient is φ = 10110910180.

The previous prime is 11122001201. The next prime is 11122001237. The reversal of 11122001209 is 90210022111.

It is a happy number.

11122001209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90210022111 = 11 ⋅8200911101.

It is a cyclic number.

It is not a de Polignac number, because 11122001209 - 2³ = 11122001201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122001201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505545499 + ... + 505545520.

It is an arithmetic number, because the mean of its divisors is an integer number (3033273060).

Almost surely, 2^11122001209 is an apocalyptic number.

It is an amenable number.

11122001209 is a deficient number, since it is larger than the sum of its proper divisors (1011091031).

11122001209 is a wasteful number, since it uses less digits than its factorization.

11122001209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011091030.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 11122001209 in words is "eleven billion, one hundred twenty-two million, one thousand, two hundred nine".