102011101109 has 4 divisors (see below), whose sum is σ = 102012751116. Its totient is φ = 102009451104.

The previous prime is 102011101097. The next prime is 102011101123. The reversal of 102011101109 is 901101110201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58963980625 + 43047120484 = 242825^2 + 207478^2 .

It is a cyclic number.

It is not a de Polignac number, because 102011101109 - 2⁸ = 102011100853 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 (102011101169) 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, 728504 + ... + 857169.

It is an arithmetic number, because the mean of its divisors is an integer number (25503187779).

Almost surely, 2^102011101109 is an apocalyptic number.

It is an amenable number.

102011101109 is a deficient number, since it is larger than the sum of its proper divisors (1650007).

102011101109 is an equidigital number, since it uses as much as digits as its factorization.

102011101109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650006.

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

The spelling of 102011101109 in words is "one hundred two billion, eleven million, one hundred one thousand, one hundred nine".