3220012021 has 8 divisors (see below), whose sum is σ = 3227627520. Its totient is φ = 3212406672.

The previous prime is 3220012009. The next prime is 3220012049. The reversal of 3220012021 is 1202100223.

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 3220012021 - 2⁵ = 3220011989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3220011992 and 3220012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220012001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194351 + ... + 1197043.

It is an arithmetic number, because the mean of its divisors is an integer number (403453440).

Almost surely, 2^3220012021 is an apocalyptic number.

It is an amenable number.

3220012021 is a deficient number, since it is larger than the sum of its proper divisors (7615499).

3220012021 is a wasteful number, since it uses less digits than its factorization.

3220012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5075.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 3220012021 is about 56745.1497574903. The cubic root of 3220012021 is about 1476.6780895212.

Adding to 3220012021 its reverse (1202100223), we get a palindrome (4422112244).

The spelling of 3220012021 in words is "three billion, two hundred twenty million, twelve thousand, twenty-one".