11021011109 has 8 divisors (see below), whose sum is σ = 11293423512. Its totient is φ = 10748770560.

The previous prime is 11021011103. The next prime is 11021011129. The reversal of 11021011109 is 90111012011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2831304100 + 8189707009 = 53210^2 + 90497^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021011109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021011103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92057 + ... + 174689.

It is an arithmetic number, because the mean of its divisors is an integer number (1411677939).

Almost surely, 2^11021011109 is an apocalyptic number.

It is an amenable number.

11021011109 is a deficient number, since it is larger than the sum of its proper divisors (272412403).

11021011109 is an equidigital number, since it uses as much as digits as its factorization.

11021011109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85927.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 11021011109 in words is "eleven billion, twenty-one million, eleven thousand, one hundred nine".