3072001221 has 20 divisors (see below), whose sum is σ = 4624085664. Its totient is φ = 2032360200.

The previous prime is 3072001217. The next prime is 3072001237. The reversal of 3072001221 is 1221002703.

It is not a de Polignac number, because 3072001221 - 2² = 3072001217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3072001194 and 3072001203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3072001241) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 134145 + ... + 155366.

Almost surely, 2^3072001221 is an apocalyptic number.

It is an amenable number.

3072001221 is a deficient number, since it is larger than the sum of its proper divisors (1552084443).

3072001221 is a wasteful number, since it uses less digits than its factorization.

3072001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289654 (or 289645 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 3072001221 is about 55425.6368569636. The cubic root of 3072001221 is about 1453.6966668615.

Adding to 3072001221 its reverse (1221002703), we get a palindrome (4293003924).

The spelling of 3072001221 in words is "three billion, seventy-two million, one thousand, two hundred twenty-one".