11100221209 has 32 divisors (see below), whose sum is σ = 13948526592. Its totient is φ = 8581464000.

The previous prime is 11100221207. The next prime is 11100221227. The reversal of 11100221209 is 90212200111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11100221209 - 2¹ = 11100221207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11100221207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9016624 + ... + 9017854.

It is an arithmetic number, because the mean of its divisors is an integer number (435891456).

Almost surely, 2^11100221209 is an apocalyptic number.

It is an amenable number.

11100221209 is a deficient number, since it is larger than the sum of its proper divisors (2848305383).

11100221209 is a wasteful number, since it uses less digits than its factorization.

11100221209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077.

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

The spelling of 11100221209 in words is "eleven billion, one hundred million, two hundred twenty-one thousand, two hundred nine".