144220122 has 64 divisors (see below), whose sum is σ = 334494720. Its totient is φ = 46008000.

The previous prime is 144220081. The next prime is 144220123. The reversal of 144220122 is 221022441.

144220122 is a `hidden beast` number, since 1 + 442 + 201 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 144220095 and 144220104.

It is not an unprimeable number, because it can be changed into a prime (144220123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168648 + ... + 169500.

It is an arithmetic number, because the mean of its divisors is an integer number (5226480).

Almost surely, 2^144220122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144220122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167247360).

144220122 is an abundant number, since it is smaller than the sum of its proper divisors (190274598).

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

144220122 is a wasteful number, since it uses less digits than its factorization.

144220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 144220122 is about 12009.1682476348. The cubic root of 144220122 is about 524.4152182588.

Adding to 144220122 its reverse (221022441), we get a palindrome (365242563).

The spelling of 144220122 in words is "one hundred forty-four million, two hundred twenty thousand, one hundred twenty-two".