101102009 has 4 divisors (see below), whose sum is σ = 107049204. Its totient is φ = 95154816.

The previous prime is 101102003. The next prime is 101102039. The reversal of 101102009 is 900201101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900201101 = 11807 ⋅76243.

It can be written as a sum of positive squares in 2 ways, for example, as 57805609 + 43296400 = 7603^2 + 6580^2 .

It is a cyclic number.

It is not a de Polignac number, because 101102009 - 2⁴ = 101101993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101101984 and 101102002.

It is not an unprimeable number, because it can be changed into a prime (101102003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2973572 + ... + 2973605.

It is an arithmetic number, because the mean of its divisors is an integer number (26762301).

Almost surely, 2^101102009 is an apocalyptic number.

It is an amenable number.

101102009 is a deficient number, since it is larger than the sum of its proper divisors (5947195).

101102009 is an equidigital number, since it uses as much as digits as its factorization.

101102009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5947194.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 101102009 is about 10054.9494777448. The cubic root of 101102009 is about 465.8576824762.

The spelling of 101102009 in words is "one hundred one million, one hundred two thousand, nine".