71009222 has 4 divisors (see below), whose sum is σ = 106513836. Its totient is φ = 35504610.

The previous prime is 71009219. The next prime is 71009231. The reversal of 71009222 is 22290017.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22290017 = 3559 ⋅6263.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17752304 + ... + 17752307.

It is an arithmetic number, because the mean of its divisors is an integer number (26628459).

Almost surely, 2^71009222 is an apocalyptic number.

71009222 is a deficient number, since it is larger than the sum of its proper divisors (35504614).

71009222 is a wasteful number, since it uses less digits than its factorization.

71009222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35504613.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 71009222 is about 8426.6969804307. The cubic root of 71009222 is about 414.0997021573.

Adding to 71009222 its reverse (22290017), we get a palindrome (93299239).

The spelling of 71009222 in words is "seventy-one million, nine thousand, two hundred twenty-two".