101000120009 has 4 divisors (see below), whose sum is σ = 101011712640. Its totient is φ = 100988527380.

The previous prime is 101000120003. The next prime is 101000120021. The reversal of 101000120009 is 900021000101.

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: 900021000101 = 7717 ⋅116628353.

It is a cyclic number.

It is not a de Polignac number, because 101000120009 - 2¹⁶ = 101000054473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101000119975 and 101000120002.

It is not an unprimeable number, because it can be changed into a prime (101000120003) 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, 5783237 + ... + 5800674.

It is an arithmetic number, because the mean of its divisors is an integer number (25252928160).

Almost surely, 2^101000120009 is an apocalyptic number.

It is an amenable number.

101000120009 is a deficient number, since it is larger than the sum of its proper divisors (11592631).

101000120009 is an equidigital number, since it uses as much as digits as its factorization.

101000120009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11592630.

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

The spelling of 101000120009 in words is "one hundred one billion, one hundred twenty thousand, nine".