2171201567 has 2 divisors, whose sum is σ = 2171201568. Its totient is φ = 2171201566.

The previous prime is 2171201533. The next prime is 2171201701. The reversal of 2171201567 is 7651021712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2171201567 - 2²⁴ = 2154424351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2171201507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085600783 + 1085600784.

It is an arithmetic number, because the mean of its divisors is an integer number (1085600784).

Almost surely, 2^2171201567 is an apocalyptic number.

2171201567 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171201567 is an equidigital number, since it uses as much as digits as its factorization.

2171201567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 2171201567 is about 46596.1539936506. The cubic root of 2171201567 is about 1294.8915035592.

The spelling of 2171201567 in words is "two billion, one hundred seventy-one million, two hundred one thousand, five hundred sixty-seven".