1223144250 has 32 divisors (see below), whose sum is σ = 3052969920. Its totient is φ = 326171600.

The previous prime is 1223144213. The next prime is 1223144303. The reversal of 1223144250 is 524413221.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223144250.

It is an unprimeable number.

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, 814680 + ... + 816179.

It is an arithmetic number, because the mean of its divisors is an integer number (95405310).

Almost surely, 2^1223144250 is an apocalyptic number.

1223144250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223144250 is an abundant number, since it is smaller than the sum of its proper divisors (1829825670).

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

1223144250 is a wasteful number, since it uses less digits than its factorization.

1223144250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630879 (or 1630869 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1223144250 is about 34973.4792378454. The cubic root of 1223144250 is about 1069.4469002149.

Adding to 1223144250 its reverse (524413221), we get a palindrome (1747557471).

The spelling of 1223144250 in words is "one billion, two hundred twenty-three million, one hundred forty-four thousand, two hundred fifty".