221221302103 has 8 divisors (see below), whose sum is σ = 225414272960. Its totient is φ = 217046602080.

The previous prime is 221221302097. The next prime is 221221302131. The reversal of 221221302103 is 301203122122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221221302103 - 2³³ = 212631367511 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 (221221302163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4543263 + ... + 4591696.

It is an arithmetic number, because the mean of its divisors is an integer number (28176784120).

Almost surely, 2^221221302103 is an apocalyptic number.

221221302103 is a deficient number, since it is larger than the sum of its proper divisors (4192970857).

221221302103 is an equidigital number, since it uses as much as digits as its factorization.

221221302103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9135417.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 221221302103 its reverse (301203122122), we get a palindrome (522424424225).

The spelling of 221221302103 in words is "two hundred twenty-one billion, two hundred twenty-one million, three hundred two thousand, one hundred three".