101001001109 has 4 divisors (see below), whose sum is σ = 101423599680. Its totient is φ = 100578402540.

The previous prime is 101001001093. The next prime is 101001001121. The reversal of 101001001109 is 901100100101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 901100100101 = 18787 ⋅47964023.

It is a cyclic number.

It is not a de Polignac number, because 101001001109 - 2⁴ = 101001001093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101001001093 and 101001001102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101001001139) 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, 211298927 + ... + 211299404.

It is an arithmetic number, because the mean of its divisors is an integer number (25355899920).

Almost surely, 2^101001001109 is an apocalyptic number.

It is an amenable number.

101001001109 is a deficient number, since it is larger than the sum of its proper divisors (422598571).

101001001109 is an equidigital number, since it uses as much as digits as its factorization.

101001001109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422598570.

The product of its (nonzero) digits is 9, while the sum is 14.

The spelling of 101001001109 in words is "one hundred one billion, one million, one thousand, one hundred nine".