4124551221 has 24 divisors (see below), whose sum is σ = 6813857024. Its totient is φ = 2355130080.

The previous prime is 4124551159. The next prime is 4124551229. The reversal of 4124551221 is 1221554214.

It is a happy number.

4124551221 is a `hidden beast` number, since 4 + 124 + 5 + 512 + 21 = 666.

It is not a de Polignac number, because 4124551221 - 2⁶ = 4124551157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4124551229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63300 + ... + 110706.

Almost surely, 2^4124551221 is an apocalyptic number.

It is an amenable number.

4124551221 is a deficient number, since it is larger than the sum of its proper divisors (2689305803).

4124551221 is a wasteful number, since it uses less digits than its factorization.

4124551221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48801 (or 48798 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 4124551221 is about 64222.6690585186. The cubic root of 4124551221 is about 1603.7090023210.

The spelling of 4124551221 in words is "four billion, one hundred twenty-four million, five hundred fifty-one thousand, two hundred twenty-one".