2813022221 has 2 divisors, whose sum is σ = 2813022222. Its totient is φ = 2813022220.

The previous prime is 2813022211. The next prime is 2813022229. The reversal of 2813022221 is 1222203182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2810166121 + 2856100 = 53011^2 + 1690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2813022221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2813022229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1406511110 + 1406511111.

It is an arithmetic number, because the mean of its divisors is an integer number (1406511111).

Almost surely, 2^2813022221 is an apocalyptic number.

It is an amenable number.

2813022221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2813022221 is an equidigital number, since it uses as much as digits as its factorization.

2813022221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 2813022221 is about 53037.9319072680. The cubic root of 2813022221 is about 1411.6414030306.

The spelling of 2813022221 in words is "two billion, eight hundred thirteen million, twenty-two thousand, two hundred twenty-one".