3122331021 has 12 divisors (see below), whose sum is σ = 4510877280. Its totient is φ = 2081164680.

The previous prime is 3122331011. The next prime is 3122331049. The reversal of 3122331021 is 1201332213.

3122331021 is a `hidden beast` number, since 312 + 2 + 331 + 0 + 21 = 666.

It is not a de Polignac number, because 3122331021 - 2¹³ = 3122322829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3122330985 and 3122331003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3122331011) 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 11 ways as a sum of consecutive naturals, for example, 23406 + ... + 82416.

It is an arithmetic number, because the mean of its divisors is an integer number (375906440).

Almost surely, 2^3122331021 is an apocalyptic number.

It is an amenable number.

3122331021 is a deficient number, since it is larger than the sum of its proper divisors (1388546259).

3122331021 is a wasteful number, since it uses less digits than its factorization.

3122331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64896 (or 64893 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 3122331021 is about 55877.8222642937. The cubic root of 3122331021 is about 1461.5925296524.

Adding to 3122331021 its reverse (1201332213), we get a palindrome (4323663234).

The spelling of 3122331021 in words is "three billion, one hundred twenty-two million, three hundred thirty-one thousand, twenty-one".