22171160 has 64 divisors (see below), whose sum is σ = 55792800. Its totient is φ = 7859200.

The previous prime is 22171159. The next prime is 22171183. The reversal of 22171160 is 6117122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17426 + ... + 18654.

Almost surely, 2^22171160 is an apocalyptic number.

22171160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22171160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27896400).

22171160 is an abundant number, since it is smaller than the sum of its proper divisors (33621640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22171160 is a wasteful number, since it uses less digits than its factorization.

22171160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292 (or 1288 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 22171160 is about 4708.6261265894. The cubic root of 22171160 is about 280.9287188911.

Adding to 22171160 its reverse (6117122), we get a palindrome (28288282).

The spelling of 22171160 in words is "twenty-two million, one hundred seventy-one thousand, one hundred sixty".