1222144252 has 12 divisors (see below), whose sum is σ = 2444288560. Its totient is φ = 523776096.

The previous prime is 1222144249. The next prime is 1222144267. The reversal of 1222144252 is 2524412221.

It is a happy number.

1222144252 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21823977 + ... + 21824032.

Almost surely, 2^1222144252 is an apocalyptic number.

It is an amenable number.

1222144252 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.

1222144252 is a wasteful number, since it uses less digits than its factorization.

1222144252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43648020 (or 43648018 counting only the distinct ones).

The product of its digits is 2560, while the sum is 25.

The square root of 1222144252 is about 34959.1797958705. The cubic root of 1222144252 is about 1069.1553738638.

Adding to 1222144252 its reverse (2524412221), we get a palindrome (3746556473).

The spelling of 1222144252 in words is "one billion, two hundred twenty-two million, one hundred forty-four thousand, two hundred fifty-two".