171216422 has 16 divisors (see below), whose sum is σ = 276797472. Its totient is φ = 78960960.

The previous prime is 171216413. The next prime is 171216431. The reversal of 171216422 is 224612171.

It is an interprime number because it is at equal distance from previous prime (171216413) and next prime (171216431).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 171216391 and 171216400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57863 + ... + 60749.

It is an arithmetic number, because the mean of its divisors is an integer number (17299842).

Almost surely, 2^171216422 is an apocalyptic number.

171216422 is a deficient number, since it is larger than the sum of its proper divisors (105581050).

171216422 is a wasteful number, since it uses less digits than its factorization.

171216422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5183.

The product of its digits is 1344, while the sum is 26.

The square root of 171216422 is about 13084.9693159747. The cubic root of 171216422 is about 555.2839733896.

Adding to 171216422 its reverse (224612171), we get a palindrome (395828593).

The spelling of 171216422 in words is "one hundred seventy-one million, two hundred sixteen thousand, four hundred twenty-two".