201100201123 has 2 divisors, whose sum is σ = 201100201124. Its totient is φ = 201100201122.

The previous prime is 201100201121. The next prime is 201100201171. The reversal of 201100201123 is 321102001102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201100201123 - 2¹ = 201100201121 is a prime.

It is a super-2 number, since 2×201100201123² (a number of 23 digits) contains 22 as substring.

Together with 201100201121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (201100201121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100550100561 + 100550100562.

It is an arithmetic number, because the mean of its divisors is an integer number (100550100562).

Almost surely, 2^201100201123 is an apocalyptic number.

201100201123 is a deficient number, since it is larger than the sum of its proper divisors (1).

201100201123 is an equidigital number, since it uses as much as digits as its factorization.

201100201123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 201100201123 its reverse (321102001102), we get a palindrome (522202202225).

The spelling of 201100201123 in words is "two hundred one billion, one hundred million, two hundred one thousand, one hundred twenty-three".