101012440243 has 12 divisors (see below), whose sum is σ = 119324003688. Its totient is φ = 84765682560.

The previous prime is 101012440229. The next prime is 101012440259. The reversal of 101012440243 is 342044210101.

It is a happy number.

It is not a de Polignac number, because 101012440243 - 2¹³ = 101012432051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101012440343) 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 11 ways as a sum of consecutive naturals, for example, 27166630 + ... + 27170347.

It is an arithmetic number, because the mean of its divisors is an integer number (9943666974).

Almost surely, 2^101012440243 is an apocalyptic number.

101012440243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

101012440243 is a deficient number, since it is larger than the sum of its proper divisors (18311563445).

101012440243 is a wasteful number, since it uses less digits than its factorization.

101012440243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54337014 (or 54337001 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 101012440243 its reverse (342044210101), we get a palindrome (443056650344).

The spelling of 101012440243 in words is "one hundred one billion, twelve million, four hundred forty thousand, two hundred forty-three".