4134220021 has 32 divisors (see below), whose sum is σ = 4538695680. Its totient is φ = 3751238400.

The previous prime is 4134220009. The next prime is 4134220037. The reversal of 4134220021 is 1200224314.

It is a cyclic number.

It is not a de Polignac number, because 4134220021 - 2¹¹ = 4134217973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4134220001) 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, 18212310 + ... + 18212536.

It is an arithmetic number, because the mean of its divisors is an integer number (141834240).

Almost surely, 2^4134220021 is an apocalyptic number.

It is an amenable number.

4134220021 is a deficient number, since it is larger than the sum of its proper divisors (404475659).

4134220021 is a wasteful number, since it uses less digits than its factorization.

4134220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4134220021 is about 64297.9005955871. The cubic root of 4134220021 is about 1604.9611661039.

Adding to 4134220021 its reverse (1200224314), we get a palindrome (5334444335).

The spelling of 4134220021 in words is "four billion, one hundred thirty-four million, two hundred twenty thousand, twenty-one".