201102101243 has 2 divisors, whose sum is σ = 201102101244. Its totient is φ = 201102101242.

The previous prime is 201102101227. The next prime is 201102101287. The reversal of 201102101243 is 342101201102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201102101243 - 2⁴ = 201102101227 is a prime.

It is not a weakly prime, because it can be changed into another prime (201102101203) 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, 100551050621 + 100551050622.

It is an arithmetic number, because the mean of its divisors is an integer number (100551050622).

Almost surely, 2^201102101243 is an apocalyptic number.

201102101243 is a deficient number, since it is larger than the sum of its proper divisors (1).

201102101243 is an equidigital number, since it uses as much as digits as its factorization.

201102101243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 201102101243 its reverse (342101201102), we get a palindrome (543203302345).

The spelling of 201102101243 in words is "two hundred one billion, one hundred two million, one hundred one thousand, two hundred forty-three".