72222 has 8 divisors (see below), whose sum is σ = 144456. Its totient is φ = 24072.

The previous prime is 72221. The next prime is 72223. The reversal of 72222 is 22227.

It is an interprime number because it is at equal distance from previous prime (72221) and next prime (72223).

It is a sphenic number, since it is the product of 3 distinct primes.

72222 is an admirable number.

It is an Ulam number.

72222 is a modest number, since divided by 222 gives 72 as remainder.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6013 + ... + 6024.

It is an arithmetic number, because the mean of its divisors is an integer number (18057).

2⁷²²²² is an apocalyptic number.

72222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72228).

72222 is a wasteful number, since it uses less digits than its factorization.

72222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12042.

The product of its digits is 112, while the sum is 15.

The square root of 72222 is about 268.7415114939. The cubic root of 72222 is about 41.6443898698.

Adding to 72222 its reverse (22227), we get a palindrome (94449).

The spelling of 72222 in words is "seventy-two thousand, two hundred twenty-two", and thus it is an iban number.