2171202193 has 2 divisors, whose sum is σ = 2171202194. Its totient is φ = 2171202192.

The previous prime is 2171202179. The next prime is 2171202197. The reversal of 2171202193 is 3912021712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2071342144 + 99860049 = 45512^2 + 9993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2171202193 is a prime.

It is not a weakly prime, because it can be changed into another prime (2171202197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085601096 + 1085601097.

It is an arithmetic number, because the mean of its divisors is an integer number (1085601097).

Almost surely, 2^2171202193 is an apocalyptic number.

It is an amenable number.

2171202193 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171202193 is an equidigital number, since it uses as much as digits as its factorization.

2171202193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 2171202193 is about 46596.1607109427. The cubic root of 2171202193 is about 1294.8916280067.

The spelling of 2171202193 in words is "two billion, one hundred seventy-one million, two hundred two thousand, one hundred ninety-three".