10101009 has 16 divisors (see below), whose sum is σ = 14722560. Its totient is φ = 6132480.

The previous prime is 10100999. The next prime is 10101023. The reversal of 10101009 is 90010101.

It is not a de Polignac number, because 10101009 - 2²¹ = 8003857 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10100985 and 10101003.

It is not an unprimeable number, because it can be changed into a prime (10101079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1614 + ... + 4775.

It is an arithmetic number, because the mean of its divisors is an integer number (920160).

Almost surely, 2^10101009 is an apocalyptic number.

It is an amenable number.

10101009 is a deficient number, since it is larger than the sum of its proper divisors (4621551).

10101009 is a wasteful number, since it uses less digits than its factorization.

10101009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6440.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 10101009 is about 3178.2084576063. The cubic root of 10101009 is about 216.1664312286.

The spelling of 10101009 in words is "ten million, one hundred one thousand, nine".