201100122121099 has 4 divisors (see below), whose sum is σ = 201100367959120. Its totient is φ = 201099876283080.

The previous prime is 201100122121081. The next prime is 201100122121141. The reversal of 201100122121099 is 990121221001102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201100122121099 - 2⁹ = 201100122120587 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201100122121099.

It is not an unprimeable number, because it can be changed into a prime (201100122121399) 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, 121687872 + ... + 123329389.

It is an arithmetic number, because the mean of its divisors is an integer number (50275091989780).

Almost surely, 2^{201100122121099} is an apocalyptic number.

201100122121099 is a deficient number, since it is larger than the sum of its proper divisors (245838021).

201100122121099 is an equidigital number, since it uses as much as digits as its factorization.

201100122121099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245838020.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 201100122121099 in words is "two hundred one trillion, one hundred billion, one hundred twenty-two million, one hundred twenty-one thousand, ninety-nine".