3001221997 has 4 divisors (see below), whose sum is σ = 3017803516. Its totient is φ = 2984640480.

The previous prime is 3001221967. The next prime is 3001222009. The reversal of 3001221997 is 7991221003.

It is a happy number.

3001221997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7991221003 = 61 ⋅131003623.

It can be written as a sum of positive squares in 2 ways, for example, as 47734281 + 2953487716 = 6909^2 + 54346^2 .

It is a cyclic number.

It is not a de Polignac number, because 3001221997 - 2²⁷ = 2867004269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3001221967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8290488 + ... + 8290849.

It is an arithmetic number, because the mean of its divisors is an integer number (754450879).

Almost surely, 2^3001221997 is an apocalyptic number.

It is an amenable number.

3001221997 is a deficient number, since it is larger than the sum of its proper divisors (16581519).

3001221997 is a wasteful number, since it uses less digits than its factorization.

3001221997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16581518.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 3001221997 is about 54783.4098701423. The cubic root of 3001221997 is about 1442.4453686857.

The spelling of 3001221997 in words is "three billion, one million, two hundred twenty-one thousand, nine hundred ninety-seven".