4521221124 has 24 divisors (see below), whose sum is σ = 12056589888. Its totient is φ = 1291777440.

The previous prime is 4521221101. The next prime is 4521221189. The reversal of 4521221124 is 4211221254.

It is a junction number, because it is equal to n+sod(n) for n = 4521221094 and 4521221103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26911947 + ... + 26912114.

It is an arithmetic number, because the mean of its divisors is an integer number (502357912).

Almost surely, 2^4521221124 is an apocalyptic number.

It is an amenable number.

4521221124 is an abundant number, since it is smaller than the sum of its proper divisors (7535368764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4521221124 is a wasteful number, since it uses less digits than its factorization.

4521221124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53824075 (or 53824073 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 4521221124 is about 67240.0262046350. The cubic root of 4521221124 is about 1653.5547632920.

Adding to 4521221124 its reverse (4211221254), we get a palindrome (8732442378).

The spelling of 4521221124 in words is "four billion, five hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty-four".