222251500 has 48 divisors (see below), whose sum is σ = 487206720. Its totient is φ = 88569600.

The previous prime is 222251483. The next prime is 222251501. The reversal of 222251500 is 5152222.

It is not an unprimeable number, because it can be changed into a prime (222251501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167841 + ... + 169159.

It is an arithmetic number, because the mean of its divisors is an integer number (10150140).

Almost surely, 2^222251500 is an apocalyptic number.

222251500 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 222251500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243603360).

222251500 is an abundant number, since it is smaller than the sum of its proper divisors (264955220).

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

222251500 is a wasteful number, since it uses less digits than its factorization.

222251500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 222251500 is about 14908.1018241760. The cubic root of 222251500 is about 605.7334637357.

It can be divided in two parts, 22 and 2251500, that added together give a palindrome (2251522).

The spelling of 222251500 in words is "two hundred twenty-two million, two hundred fifty-one thousand, five hundred".