3021001221 has 16 divisors (see below), whose sum is σ = 4605324800. Its totient is φ = 1725576048.

The previous prime is 3021001211. The next prime is 3021001231. The reversal of 3021001221 is 1221001203.

It is an interprime number because it is at equal distance from previous prime (3021001211) and next prime (3021001231).

It is not a de Polignac number, because 3021001221 - 2⁶ = 3021001157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3021001197 and 3021001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3021001211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24990 + ... + 81648.

It is an arithmetic number, because the mean of its divisors is an integer number (287832800).

Almost surely, 2^3021001221 is an apocalyptic number.

It is an amenable number.

3021001221 is a deficient number, since it is larger than the sum of its proper divisors (1584323579).

3021001221 is a wasteful number, since it uses less digits than its factorization.

3021001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59208.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 3021001221 is about 54963.6354419902. The cubic root of 3021001221 is about 1445.6071922092.

Adding to 3021001221 its reverse (1221001203), we get a palindrome (4242002424).

The spelling of 3021001221 in words is "three billion, twenty-one million, one thousand, two hundred twenty-one".