2193675221 has 2 divisors, whose sum is σ = 2193675222. Its totient is φ = 2193675220.

The previous prime is 2193675199. The next prime is 2193675233. The reversal of 2193675221 is 1225763912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2116920100 + 76755121 = 46010^2 + 8761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2193675221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2193675241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1096837610 + 1096837611.

It is an arithmetic number, because the mean of its divisors is an integer number (1096837611).

Almost surely, 2^2193675221 is an apocalyptic number.

It is an amenable number.

2193675221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2193675221 is an equidigital number, since it uses as much as digits as its factorization.

2193675221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 2193675221 is about 46836.6866996375. The cubic root of 2193675221 is about 1299.3438939703.

The spelling of 2193675221 in words is "two billion, one hundred ninety-three million, six hundred seventy-five thousand, two hundred twenty-one".