4201550221 has 16 divisors (see below), whose sum is σ = 4911617088. Its totient is φ = 3551584000.

The previous prime is 4201550219. The next prime is 4201550233. The reversal of 4201550221 is 1220551024.

It is a cyclic number.

It is not a de Polignac number, because 4201550221 - 2¹ = 4201550219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4201550192 and 4201550201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4201550201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119830 + ... + 150871.

It is an arithmetic number, because the mean of its divisors is an integer number (306976068).

Almost surely, 2^4201550221 is an apocalyptic number.

It is an amenable number.

4201550221 is a deficient number, since it is larger than the sum of its proper divisors (710066867).

4201550221 is a wasteful number, since it uses less digits than its factorization.

4201550221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270812.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 4201550221 is about 64819.3660953268. The cubic root of 4201550221 is about 1613.6271272392.

The spelling of 4201550221 in words is "four billion, two hundred one million, five hundred fifty thousand, two hundred twenty-one".