201100210020009 has 16 divisors (see below), whose sum is σ = 297977790548800. Its totient is φ = 134043607613088.

The previous prime is 201100210020007. The next prime is 201100210020037. The reversal of 201100210020009 is 900020012001102.

It is not a de Polignac number, because 201100210020009 - 2¹ = 201100210020007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201100210019973 and 201100210020000.

It is not an unprimeable number, because it can be changed into a prime (201100210020007) 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, 644259604 + ... + 644571669.

It is an arithmetic number, because the mean of its divisors is an integer number (18623611909300).

Almost surely, 2^{201100210020009} is an apocalyptic number.

It is an amenable number.

201100210020009 is a deficient number, since it is larger than the sum of its proper divisors (96877580528791).

201100210020009 is a wasteful number, since it uses less digits than its factorization.

201100210020009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288837061 (or 1288837055 counting only the distinct ones).

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

The spelling of 201100210020009 in words is "two hundred one trillion, one hundred billion, two hundred ten million, twenty thousand, nine".