221202103 has 4 divisors (see below), whose sum is σ = 221319648. Its totient is φ = 221084560.

The previous prime is 221202077. The next prime is 221202119. The reversal of 221202103 is 301202122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221202103 - 2⁵ = 221202071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55903 + ... + 59728.

It is an arithmetic number, because the mean of its divisors is an integer number (55329912).

Almost surely, 2^221202103 is an apocalyptic number.

221202103 is a deficient number, since it is larger than the sum of its proper divisors (117545).

221202103 is a wasteful number, since it uses less digits than its factorization.

221202103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117544.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 221202103 is about 14872.8646534553. The cubic root of 221202103 is about 604.7786025958.

Adding to 221202103 its reverse (301202122), we get a palindrome (522404225).

The spelling of 221202103 in words is "two hundred twenty-one million, two hundred two thousand, one hundred three".