103204221 has 4 divisors (see below), whose sum is σ = 137605632. Its totient is φ = 68802812.

The previous prime is 103204111. The next prime is 103204223. The reversal of 103204221 is 122402301.

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 103204221 - 2¹⁷ = 103073149 is a prime.

It is a super-2 number, since 2×103204221² = 21302222464433682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103204221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103204223) 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, 17200701 + ... + 17200706.

It is an arithmetic number, because the mean of its divisors is an integer number (34401408).

Almost surely, 2^103204221 is an apocalyptic number.

It is an amenable number.

103204221 is a deficient number, since it is larger than the sum of its proper divisors (34401411).

103204221 is an equidigital number, since it uses as much as digits as its factorization.

103204221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34401410.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 103204221 is about 10158.9478293768. The cubic root of 103204221 is about 469.0644146943.

Adding to 103204221 its reverse (122402301), we get a palindrome (225606522).

It can be divided in two parts, 10320 and 4221, that added together give a palindrome (14541).

The spelling of 103204221 in words is "one hundred three million, two hundred four thousand, two hundred twenty-one".