3120244021 has 8 divisors (see below), whose sum is σ = 3134497464. Its totient is φ = 3106015680.

The previous prime is 3120244019. The next prime is 3120244031. The reversal of 3120244021 is 1204420213.

It can be written as a sum of positive squares in 4 ways, for example, as 2312263396 + 807980625 = 48086^2 + 28425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3120244021 - 2¹ = 3120244019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3120244021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3120244031) 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 7 ways as a sum of consecutive naturals, for example, 270055 + ... + 281371.

It is an arithmetic number, because the mean of its divisors is an integer number (391812183).

Almost surely, 2^3120244021 is an apocalyptic number.

It is an amenable number.

3120244021 is a deficient number, since it is larger than the sum of its proper divisors (14253443).

3120244021 is a wasteful number, since it uses less digits than its factorization.

3120244021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12551.

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

The square root of 3120244021 is about 55859.1444707131. The cubic root of 3120244021 is about 1461.2668089575.

Adding to 3120244021 its reverse (1204420213), we get a palindrome (4324664234).

The spelling of 3120244021 in words is "three billion, one hundred twenty million, two hundred forty-four thousand, twenty-one".