201100202109 has 24 divisors (see below), whose sum is σ = 293001700992. Its totient is φ = 132906359520.

The previous prime is 201100202077. The next prime is 201100202111. The reversal of 201100202109 is 901202001102.

It is not a de Polignac number, because 201100202109 - 2⁵ = 201100202077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201100202091 and 201100202100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201100202179) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 381264 + ... + 739974.

It is an arithmetic number, because the mean of its divisors is an integer number (12208404208).

Almost surely, 2^201100202109 is an apocalyptic number.

It is an amenable number.

201100202109 is a deficient number, since it is larger than the sum of its proper divisors (91901498883).

201100202109 is a wasteful number, since it uses less digits than its factorization.

201100202109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359257 (or 359254 counting only the distinct ones).

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

The spelling of 201100202109 in words is "two hundred one billion, one hundred million, two hundred two thousand, one hundred nine".