2217222072 has 160 divisors (see below), whose sum is σ = 6844640880. Its totient is φ = 666247680.

The previous prime is 2217222071. The next prime is 2217222097. The reversal of 2217222072 is 2702227122.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217222071) 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 39 ways as a sum of consecutive naturals, for example, 359172 + ... + 365292.

Almost surely, 2^2217222072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2217222072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3422320440).

2217222072 is an abundant number, since it is smaller than the sum of its proper divisors (4627418808).

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

2217222072 is a wasteful number, since it uses less digits than its factorization.

2217222072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6195 (or 6182 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 2217222072 is about 47087.3876106968. The cubic root of 2217222072 is about 1303.9763990735.

Adding to 2217222072 its reverse (2702227122), we get a palindrome (4919449194).

It can be divided in two parts, 22172 and 22072, that added together give a palindrome (44244).

The spelling of 2217222072 in words is "two billion, two hundred seventeen million, two hundred twenty-two thousand, seventy-two".