2193221273 has 2 divisors, whose sum is σ = 2193221274. Its totient is φ = 2193221272.

The previous prime is 2193221231. The next prime is 2193221347. The reversal of 2193221273 is 3721223912.

2193221273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1933624729 + 259596544 = 43973^2 + 16112^2 .

It is a cyclic number.

It is not a de Polignac number, because 2193221273 - 2⁶ = 2193221209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2193221203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1096610636 + 1096610637.

It is an arithmetic number, because the mean of its divisors is an integer number (1096610637).

Almost surely, 2^2193221273 is an apocalyptic number.

It is an amenable number.

2193221273 is a deficient number, since it is larger than the sum of its proper divisors (1).

2193221273 is an equidigital number, since it uses as much as digits as its factorization.

2193221273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 2193221273 is about 46831.8403759664. The cubic root of 2193221273 is about 1299.2542612470.

The spelling of 2193221273 in words is "two billion, one hundred ninety-three million, two hundred twenty-one thousand, two hundred seventy-three".