4102210721 has 16 divisors (see below), whose sum is σ = 4965784704. Its totient is φ = 3308169984.

The previous prime is 4102210669. The next prime is 4102210729. The reversal of 4102210721 is 1270122014.

It is not a de Polignac number, because 4102210721 - 2¹⁴ = 4102194337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4102210693 and 4102210702.

It is not an unprimeable number, because it can be changed into a prime (4102210729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516446 + ... + 524328.

It is an arithmetic number, because the mean of its divisors is an integer number (310361544).

Almost surely, 2^4102210721 is an apocalyptic number.

It is an amenable number.

4102210721 is a deficient number, since it is larger than the sum of its proper divisors (863573983).

4102210721 is a wasteful number, since it uses less digits than its factorization.

4102210721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12280.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 4102210721 is about 64048.5028786778. The cubic root of 4102210721 is about 1600.8082792394.

Adding to 4102210721 its reverse (1270122014), we get a palindrome (5372332735).

The spelling of 4102210721 in words is "four billion, one hundred two million, two hundred ten thousand, seven hundred twenty-one".