11020102109 has 4 divisors (see below), whose sum is σ = 11400105660. Its totient is φ = 10640098560.

The previous prime is 11020102097. The next prime is 11020102129. The reversal of 11020102109 is 90120102011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90120102011 = 1733 ⋅52002367.

It can be written as a sum of positive squares in 2 ways, for example, as 7590242884 + 3429859225 = 87122^2 + 58565^2 .

It is a cyclic number.

It is not a de Polignac number, because 11020102109 - 2¹² = 11020098013 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 (11020102129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190001732 + ... + 190001789.

It is an arithmetic number, because the mean of its divisors is an integer number (2850026415).

Almost surely, 2^11020102109 is an apocalyptic number.

It is an amenable number.

11020102109 is a deficient number, since it is larger than the sum of its proper divisors (380003551).

11020102109 is an equidigital number, since it uses as much as digits as its factorization.

11020102109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380003550.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 11020102109 in words is "eleven billion, twenty million, one hundred two thousand, one hundred nine".