101111011009 has 4 divisors (see below), whose sum is σ = 101239488304. Its totient is φ = 100982533716.

The previous prime is 101111010997. The next prime is 101111011033. The reversal of 101111011009 is 900110111101.

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: 900110111101 = 30307 ⋅29699743.

It is a cyclic number.

It is not a de Polignac number, because 101111011009 - 2⁷ = 101111010881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101111010983 and 101111011001.

It is not an unprimeable number, because it can be changed into a prime (101111011609) 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, 64237467 + ... + 64239040.

It is an arithmetic number, because the mean of its divisors is an integer number (25309872076).

Almost surely, 2^101111011009 is an apocalyptic number.

It is an amenable number.

101111011009 is a deficient number, since it is larger than the sum of its proper divisors (128477295).

101111011009 is an equidigital number, since it uses as much as digits as its factorization.

101111011009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128477294.

The product of its (nonzero) digits is 9, while the sum is 16.

The spelling of 101111011009 in words is "one hundred one billion, one hundred eleven million, eleven thousand, nine".