100302310021 has 4 divisors (see below), whose sum is σ = 100303688044. Its totient is φ = 100300932000.

The previous prime is 100302310019. The next prime is 100302310081. The reversal of 100302310021 is 120013203001.

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 95719696996 + 4582613025 = 309386^2 + 67695^2 .

It is a cyclic number.

It is not a de Polignac number, because 100302310021 - 2¹ = 100302310019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100302309983 and 100302310010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100302310081) 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, 573360 + ... + 727561.

It is an arithmetic number, because the mean of its divisors is an integer number (25075922011).

Almost surely, 2^100302310021 is an apocalyptic number.

It is an amenable number.

100302310021 is a deficient number, since it is larger than the sum of its proper divisors (1378023).

100302310021 is an equidigital number, since it uses as much as digits as its factorization.

100302310021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378022.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 100302310021 its reverse (120013203001), we get a palindrome (220315513022).

The spelling of 100302310021 in words is "one hundred billion, three hundred two million, three hundred ten thousand, twenty-one".