3201124021 has 4 divisors (see below), whose sum is σ = 3389425452. Its totient is φ = 3012822592.

The previous prime is 3201123983. The next prime is 3201124049. The reversal of 3201124021 is 1204211023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1204211023 = 23 ⋅52357001.

It can be written as a sum of positive squares in 2 ways, for example, as 1012194225 + 2188929796 = 31815^2 + 46786^2 .

It is a cyclic number.

It is not a de Polignac number, because 3201124021 - 2¹³ = 3201115829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3201123986 and 3201124004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201124721) 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 3 ways as a sum of consecutive naturals, for example, 94150690 + ... + 94150723.

It is an arithmetic number, because the mean of its divisors is an integer number (847356363).

Almost surely, 2^3201124021 is an apocalyptic number.

It is an amenable number.

3201124021 is a deficient number, since it is larger than the sum of its proper divisors (188301431).

3201124021 is a wasteful number, since it uses less digits than its factorization.

3201124021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188301430.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 3201124021 is about 56578.4766585316. The cubic root of 3201124021 is about 1473.7851179570.

Adding to 3201124021 its reverse (1204211023), we get a palindrome (4405335044).

The spelling of 3201124021 in words is "three billion, two hundred one million, one hundred twenty-four thousand, twenty-one".