4521221103 has 8 divisors (see below), whose sum is σ = 6889479808. Its totient is φ = 2583554904.

The previous prime is 4521221101. The next prime is 4521221189. The reversal of 4521221103 is 3011221254.

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

It is not a de Polignac number, because 4521221103 - 2¹ = 4521221101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 215296243 = 4521221103 / (4 + 5 + 2 + 1 + 2 + 2 + 1 + 1 + 0 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4521221103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521221101) 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, 107648101 + ... + 107648142.

It is an arithmetic number, because the mean of its divisors is an integer number (861184976).

Almost surely, 2^4521221103 is an apocalyptic number.

4521221103 is a deficient number, since it is larger than the sum of its proper divisors (2368258705).

4521221103 is a wasteful number, since it uses less digits than its factorization.

4521221103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215296253.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 4521221103 is about 67240.0260484780. The cubic root of 4521221103 is about 1653.5547607319.

Adding to 4521221103 its reverse (3011221254), we get a palindrome (7532442357).

The spelling of 4521221103 in words is "four billion, five hundred twenty-one million, two hundred twenty-one thousand, one hundred three".