100231120321 has 4 divisors (see below), whose sum is σ = 100313076672. Its totient is φ = 100149163972.

The previous prime is 100231120309. The next prime is 100231120333. The reversal of 100231120321 is 123021132001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (100231120309) and next prime (100231120333).

It is a cyclic number.

It is not a de Polignac number, because 100231120321 - 2⁹ = 100231119809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100231120295 and 100231120304.

It is not an unprimeable number, because it can be changed into a prime (100231126321) 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, 40976341 + ... + 40978786.

It is an arithmetic number, because the mean of its divisors is an integer number (25078269168).

Almost surely, 2^100231120321 is an apocalyptic number.

It is an amenable number.

100231120321 is a deficient number, since it is larger than the sum of its proper divisors (81956351).

100231120321 is an equidigital number, since it uses as much as digits as its factorization.

100231120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81956350.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 100231120321 its reverse (123021132001), we get a palindrome (223252252322).

The spelling of 100231120321 in words is "one hundred billion, two hundred thirty-one million, one hundred twenty thousand, three hundred twenty-one".