201101001009 has 96 divisors (see below), whose sum is σ = 302338283520. Its totient is φ = 118527577344.

The previous prime is 201101000951. The next prime is 201101001011. The reversal of 201101001009 is 900100101102.

It is not a de Polignac number, because 201101001009 - 2⁸ = 201101000753 is a prime.

It is a super-2 number, since 2×201101001009² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201101001809) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 226719964 + ... + 226720850.

It is an arithmetic number, because the mean of its divisors is an integer number (3149357120).

Almost surely, 2^201101001009 is an apocalyptic number.

It is an amenable number.

201101001009 is a deficient number, since it is larger than the sum of its proper divisors (101237282511).

201101001009 is a wasteful number, since it uses less digits than its factorization.

201101001009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

The spelling of 201101001009 in words is "two hundred one billion, one hundred one million, one thousand, nine".