3321231021 has 24 divisors (see below), whose sum is σ = 4867274880. Its totient is φ = 2181980736.

The previous prime is 3321231019. The next prime is 3321231029. The reversal of 3321231021 is 1201321233.

3321231021 is a `hidden beast` number, since 332 + 1 + 2 + 310 + 21 = 666.

It is not a de Polignac number, because 3321231021 - 2¹ = 3321231019 is a prime.

It is a super-2 number, since 2×3321231021² = 22061150989705404882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3321230985 and 3321231003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3321231029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396145 + ... + 404441.

It is an arithmetic number, because the mean of its divisors is an integer number (202803120).

Almost surely, 2^3321231021 is an apocalyptic number.

It is an amenable number.

3321231021 is a deficient number, since it is larger than the sum of its proper divisors (1546043859).

3321231021 is a wasteful number, since it uses less digits than its factorization.

3321231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8945 (or 8942 counting only the distinct ones).

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

The square root of 3321231021 is about 57630.1225141852. The cubic root of 3321231021 is about 1491.9915445198.

Adding to 3321231021 its reverse (1201321233), we get a palindrome (4522552254).

The spelling of 3321231021 in words is "three billion, three hundred twenty-one million, two hundred thirty-one thousand, twenty-one".