20113201200109 has 4 divisors (see below), whose sum is σ = 20762014142080. Its totient is φ = 19464388258140.

The previous prime is 20113201200107. The next prime is 20113201200139. The reversal of 20113201200109 is 90100210231102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20113201200109 - 2¹ = 20113201200107 is a prime.

It is a super-2 number, since 2×20113201200109² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20113201200109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113201200107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324406470939 + ... + 324406471000.

It is an arithmetic number, because the mean of its divisors is an integer number (5190503535520).

Almost surely, 2^{20113201200109} is an apocalyptic number.

It is an amenable number.

20113201200109 is a deficient number, since it is larger than the sum of its proper divisors (648812941971).

20113201200109 is an equidigital number, since it uses as much as digits as its factorization.

20113201200109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648812941970.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 20113201200109 in words is "twenty trillion, one hundred thirteen billion, two hundred one million, two hundred thousand, one hundred nine".