1223144144 has 20 divisors (see below), whose sum is σ = 2427644100. Its totient is φ = 596655360.

The previous prime is 1223144141. The next prime is 1223144179. The reversal of 1223144144 is 4414413221.

It can be written as a sum of positive squares in 2 ways, for example, as 228372544 + 994771600 = 15112^2 + 31540^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223144141) 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, 931619 + ... + 932930.

It is an arithmetic number, because the mean of its divisors is an integer number (121382205).

Almost surely, 2^1223144144 is an apocalyptic number.

It is an amenable number.

1223144144 is a deficient number, since it is larger than the sum of its proper divisors (1204499956).

1223144144 is a wasteful number, since it uses less digits than its factorization.

1223144144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864598 (or 1864592 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 1223144144 is about 34973.4777224113. The cubic root of 1223144144 is about 1069.4468693214.

Adding to 1223144144 its reverse (4414413221), we get a palindrome (5637557365).

The spelling of 1223144144 in words is "one billion, two hundred twenty-three million, one hundred forty-four thousand, one hundred forty-four".