201110121943 has 2 divisors, whose sum is σ = 201110121944. Its totient is φ = 201110121942.

The previous prime is 201110121929. The next prime is 201110122039. The reversal of 201110121943 is 349121011102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201110121943 - 2²¹ = 201108024791 is a prime.

It is a super-2 number, since 2×201110121943² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201110121343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100555060971 + 100555060972.

It is an arithmetic number, because the mean of its divisors is an integer number (100555060972).

Almost surely, 2^201110121943 is an apocalyptic number.

201110121943 is a deficient number, since it is larger than the sum of its proper divisors (1).

201110121943 is an equidigital number, since it uses as much as digits as its factorization.

201110121943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 201110121943 in words is "two hundred one billion, one hundred ten million, one hundred twenty-one thousand, nine hundred forty-three".