101123110243 has 4 divisors (see below), whose sum is σ = 103589527608. Its totient is φ = 98656692880.

The previous prime is 101123110237. The next prime is 101123110247. The reversal of 101123110243 is 342011321101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101123110243 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 101123110243.

It is not an unprimeable number, because it can be changed into a prime (101123110247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1233208621 + ... + 1233208702.

It is an arithmetic number, because the mean of its divisors is an integer number (25897381902).

Almost surely, 2^101123110243 is an apocalyptic number.

101123110243 is a deficient number, since it is larger than the sum of its proper divisors (2466417365).

101123110243 is an equidigital number, since it uses as much as digits as its factorization.

101123110243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466417364.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 101123110243 its reverse (342011321101), we get a palindrome (443134431344).

The spelling of 101123110243 in words is "one hundred one billion, one hundred twenty-three million, one hundred ten thousand, two hundred forty-three".