4105252221 has 32 divisors (see below), whose sum is σ = 6738198528. Its totient is φ = 2171473920.

The previous prime is 4105252219. The next prime is 4105252243. The reversal of 4105252221 is 1222525014.

It is not a de Polignac number, because 4105252221 - 2¹ = 4105252219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4105252191 and 4105252200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4105252211) 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 31 ways as a sum of consecutive naturals, for example, 122116 + ... + 152061.

It is an arithmetic number, because the mean of its divisors is an integer number (210568704).

Almost surely, 2^4105252221 is an apocalyptic number.

It is an amenable number.

4105252221 is a deficient number, since it is larger than the sum of its proper divisors (2632946307).

4105252221 is a wasteful number, since it uses less digits than its factorization.

4105252221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274241.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 4105252221 is about 64072.2422036251. The cubic root of 4105252221 is about 1601.2038103243.

Adding to 4105252221 its reverse (1222525014), we get a palindrome (5327777235).

The spelling of 4105252221 in words is "four billion, one hundred five million, two hundred fifty-two thousand, two hundred twenty-one".