101312341021 has 4 divisors (see below), whose sum is σ = 101325289500. Its totient is φ = 101299392544.

The previous prime is 101312341001. The next prime is 101312341027. The reversal of 101312341021 is 120143213101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 44939336121 + 56373004900 = 211989^2 + 237430^2 .

It is a cyclic number.

It is not a de Polignac number, because 101312341021 - 2⁹ = 101312340509 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 101312341021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101312341027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6462496 + ... + 6478153.

It is an arithmetic number, because the mean of its divisors is an integer number (25331322375).

Almost surely, 2^101312341021 is an apocalyptic number.

It is an amenable number.

101312341021 is a deficient number, since it is larger than the sum of its proper divisors (12948479).

101312341021 is an equidigital number, since it uses as much as digits as its factorization.

101312341021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12948478.

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

Adding to 101312341021 its reverse (120143213101), we get a palindrome (221455554122).

The spelling of 101312341021 in words is "one hundred one billion, three hundred twelve million, three hundred forty-one thousand, twenty-one".