221103421324121 has 8 divisors (see below), whose sum is σ = 252690230718720. Its totient is φ = 189516763516608.

The previous prime is 221103421324081. The next prime is 221103421324169. The reversal of 221103421324121 is 121423124301122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221103421324121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221103421323121) 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, 34753841 + ... + 40620638.

It is an arithmetic number, because the mean of its divisors is an integer number (31586278839840).

Almost surely, 2^{221103421324121} is an apocalyptic number.

It is an amenable number.

221103421324121 is a deficient number, since it is larger than the sum of its proper divisors (31586809394599).

221103421324121 is an equidigital number, since it uses as much as digits as its factorization.

221103421324121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75793543.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 221103421324121 its reverse (121423124301122), we get a palindrome (342526545625243).

The spelling of 221103421324121 in words is "two hundred twenty-one trillion, one hundred three billion, four hundred twenty-one million, three hundred twenty-four thousand, one hundred twenty-one".