222145044 has 48 divisors (see below), whose sum is σ = 570984960. Its totient is φ = 66659040.

The previous prime is 222145043. The next prime is 222145061. The reversal of 222145044 is 440541222.

It is a happy number.

222145044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222145043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5427 + ... + 21765.

It is an arithmetic number, because the mean of its divisors is an integer number (11895520).

Almost surely, 2^222145044 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 222145044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285492480).

222145044 is an abundant number, since it is smaller than the sum of its proper divisors (348839916).

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

222145044 is a wasteful number, since it uses less digits than its factorization.

222145044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16460 (or 16458 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 222145044 is about 14904.5309889308. The cubic root of 222145044 is about 605.6367350896.

Adding to 222145044 its reverse (440541222), we get a palindrome (662686266).

The spelling of 222145044 in words is "two hundred twenty-two million, one hundred forty-five thousand, forty-four".