103210221 has 4 divisors (see below), whose sum is σ = 137613632. Its totient is φ = 68806812.

The previous prime is 103210201. The next prime is 103210229. The reversal of 103210221 is 122012301.

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 an emirpimes, since its reverse is a distinct semiprime: 122012301 = 3 ⋅40670767.

It is not a de Polignac number, because 103210221 - 2¹⁵ = 103177453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103210197 and 103210206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103210229) 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, 17201701 + ... + 17201706.

It is an arithmetic number, because the mean of its divisors is an integer number (34403408).

Almost surely, 2^103210221 is an apocalyptic number.

It is an amenable number.

103210221 is a deficient number, since it is larger than the sum of its proper divisors (34403411).

103210221 is an equidigital number, since it uses as much as digits as its factorization.

103210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34403410.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 103210221 is about 10159.2431312574. The cubic root of 103210221 is about 469.0735045420.

Adding to 103210221 its reverse (122012301), we get a palindrome (225222522).

The spelling of 103210221 in words is "one hundred three million, two hundred ten thousand, two hundred twenty-one".