201201102009 has 16 divisors (see below), whose sum is σ = 299388824640. Its totient is φ = 133543164960.

The previous prime is 201201101993. The next prime is 201201102043. The reversal of 201201102009 is 900201102102.

201201102009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201201102009 - 2⁴ = 201201101993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201201101982 and 201201102000.

It is not an unprimeable number, because it can be changed into a prime (201201102079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16407732 + ... + 16419989.

It is an arithmetic number, because the mean of its divisors is an integer number (18711801540).

Almost surely, 2^201201102009 is an apocalyptic number.

It is an amenable number.

201201102009 is a deficient number, since it is larger than the sum of its proper divisors (98187722631).

201201102009 is a wasteful number, since it uses less digits than its factorization.

201201102009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32827957 (or 32827951 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 201201102009 in words is "two hundred one billion, two hundred one million, one hundred two thousand, nine".