2171447222 has 16 divisors (see below), whose sum is σ = 3727170720. Its totient is φ = 929447808.

The previous prime is 2171447189. The next prime is 2171447237. The reversal of 2171447222 is 2227441712.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86147 + ... + 108462.

It is an arithmetic number, because the mean of its divisors is an integer number (232948170).

Almost surely, 2^2171447222 is an apocalyptic number.

2171447222 is a deficient number, since it is larger than the sum of its proper divisors (1555723498).

2171447222 is a wasteful number, since it uses less digits than its factorization.

2171447222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195415.

The product of its digits is 12544, while the sum is 32.

The square root of 2171447222 is about 46598.7899199110. The cubic root of 2171447222 is about 1294.9403374370.

Adding to 2171447222 its reverse (2227441712), we get a palindrome (4398888934).

The spelling of 2171447222 in words is "two billion, one hundred seventy-one million, four hundred forty-seven thousand, two hundred twenty-two".