102011109 has 8 divisors (see below), whose sum is σ = 139691040. Its totient is φ = 66169296.

The previous prime is 102011087. The next prime is 102011113. The reversal of 102011109 is 901110201.

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

It is not a de Polignac number, because 102011109 - 2¹⁵ = 101978341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459399 + ... + 459620.

It is an arithmetic number, because the mean of its divisors is an integer number (17461380).

Almost surely, 2^102011109 is an apocalyptic number.

It is an amenable number.

102011109 is a deficient number, since it is larger than the sum of its proper divisors (37679931).

102011109 is an equidigital number, since it uses as much as digits as its factorization.

102011109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919059.

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 102011109 is about 10100.0549008409. The cubic root of 102011109 is about 467.2498346053.

It can be divided in two parts, 1020 and 11109, that multiplied together give a triangular number (11331180 = T₄₇₆₀).

The spelling of 102011109 in words is "one hundred two million, eleven thousand, one hundred nine".