103210000021 has 4 divisors (see below), whose sum is σ = 103210667392. Its totient is φ = 103209332652.

The previous prime is 103210000013. The next prime is 103210000027. The reversal of 103210000021 is 120000012301.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 103210000021 - 2³ = 103210000013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103209999962 and 103210000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103210000027) 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, 31546 + ... + 455428.

It is an arithmetic number, because the mean of its divisors is an integer number (25802666848).

Almost surely, 2^103210000021 is an apocalyptic number.

It is an amenable number.

103210000021 is a deficient number, since it is larger than the sum of its proper divisors (667371).

103210000021 is an equidigital number, since it uses as much as digits as its factorization.

103210000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667370.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 103210000021 its reverse (120000012301), we get a palindrome (223210012322).

The spelling of 103210000021 in words is "one hundred three billion, two hundred ten million, twenty-one", and thus it is an aban number.