101201009 has 16 divisors (see below), whose sum is σ = 126911232. Its totient is φ = 78556608.

The previous prime is 101201003. The next prime is 101201041. The reversal of 101201009 is 900102101.

It is not a de Polignac number, because 101201009 - 2⁴ = 101200993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101200984 and 101201002.

It is not an unprimeable number, because it can be changed into a prime (101201003) 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, 5669 + ... + 15314.

It is an arithmetic number, because the mean of its divisors is an integer number (7931952).

Almost surely, 2^101201009 is an apocalyptic number.

It is an amenable number.

101201009 is a deficient number, since it is larger than the sum of its proper divisors (25710223).

101201009 is a wasteful number, since it uses less digits than its factorization.

101201009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21056.

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

The square root of 101201009 is about 10059.8712218398. The cubic root of 101201009 is about 466.0096902207.

The spelling of 101201009 in words is "one hundred one million, two hundred one thousand, nine".