222722160 has 80 divisors (see below), whose sum is σ = 692527104. Its totient is φ = 59213056.

The previous prime is 222722147. The next prime is 222722167. The reversal of 222722160 is 61227222.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 222722160.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222722167) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 90709 + ... + 93131.

Almost surely, 2^222722160 is an apocalyptic number.

222722160 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 222722160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346263552).

222722160 is an abundant number, since it is smaller than the sum of its proper divisors (469804944).

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

222722160 is a wasteful number, since it uses less digits than its factorization.

222722160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822 (or 2816 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 222722160 is about 14923.8788523627. The cubic root of 222722160 is about 606.1607476927.

Adding to 222722160 its reverse (61227222), we get a palindrome (283949382).

The spelling of 222722160 in words is "two hundred twenty-two million, seven hundred twenty-two thousand, one hundred sixty".