144621222 has 8 divisors (see below), whose sum is σ = 289242456. Its totient is φ = 48207072.

The previous prime is 144621203. The next prime is 144621223. The reversal of 144621222 is 222126441.

It is a happy number.

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

144621222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 144621192 and 144621201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144621223) 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, 12051763 + ... + 12051774.

It is an arithmetic number, because the mean of its divisors is an integer number (36155307).

Almost surely, 2^144621222 is an apocalyptic number.

144621222 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.

144621222 is a wasteful number, since it uses less digits than its factorization.

144621222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24103542.

The product of its digits is 1536, while the sum is 24.

The square root of 144621222 is about 12025.8563936212. The cubic root of 144621222 is about 524.9009300591.

Adding to 144621222 its reverse (222126441), we get a palindrome (366747663).

The spelling of 144621222 in words is "one hundred forty-four million, six hundred twenty-one thousand, two hundred twenty-two".