100103210321 has 4 divisors (see below), whose sum is σ = 100502028144. Its totient is φ = 99704392500.

The previous prime is 100103210309. The next prime is 100103210351. The reversal of 100103210321 is 123012301001.

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 a cyclic number.

It is not a de Polignac number, because 100103210321 - 2¹⁴ = 100103193937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100103210296 and 100103210305.

It is not an unprimeable number, because it can be changed into a prime (100103210351) 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, 199408535 + ... + 199409036.

It is an arithmetic number, because the mean of its divisors is an integer number (25125507036).

Almost surely, 2^100103210321 is an apocalyptic number.

It is an amenable number.

100103210321 is a deficient number, since it is larger than the sum of its proper divisors (398817823).

100103210321 is an equidigital number, since it uses as much as digits as its factorization.

100103210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398817822.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 100103210321 its reverse (123012301001), we get a palindrome (223115511322).

The spelling of 100103210321 in words is "one hundred billion, one hundred three million, two hundred ten thousand, three hundred twenty-one".