2947080221 has 2 divisors, whose sum is σ = 2947080222. Its totient is φ = 2947080220.

The previous prime is 2947080217. The next prime is 2947080223. The reversal of 2947080221 is 1220807492.

2947080221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2486119321 + 460960900 = 49861^2 + 21470^2 .

It is a cyclic number.

It is not a de Polignac number, because 2947080221 - 2² = 2947080217 is a prime.

Together with 2947080223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2947080223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1473540110 + 1473540111.

It is an arithmetic number, because the mean of its divisors is an integer number (1473540111).

Almost surely, 2^2947080221 is an apocalyptic number.

It is an amenable number.

2947080221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2947080221 is an equidigital number, since it uses as much as digits as its factorization.

2947080221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 2947080221 is about 54287.0170574881. The cubic root of 2947080221 is about 1433.7188192600.

The spelling of 2947080221 in words is "two billion, nine hundred forty-seven million, eighty thousand, two hundred twenty-one".