11102021109 has 10 divisors (see below), whose sum is σ = 16584500790. Its totient is φ = 7401347352.

The previous prime is 11102021093. The next prime is 11102021137. The reversal of 11102021109 is 90112020111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10133442225 + 968578884 = 100665^2 + 31122^2 .

It is not a de Polignac number, because 11102021109 - 2⁴ = 11102021093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11102021091 and 11102021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102023109) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 68530914 + ... + 68531075.

It is an arithmetic number, because the mean of its divisors is an integer number (1658450079).

Almost surely, 2^11102021109 is an apocalyptic number.

It is an amenable number.

11102021109 is a deficient number, since it is larger than the sum of its proper divisors (5482479681).

11102021109 is an equidigital number, since it uses as much as digits as its factorization.

11102021109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137062001 (or 137061992 counting only the distinct ones).

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

The spelling of 11102021109 in words is "eleven billion, one hundred two million, twenty-one thousand, one hundred nine".