1222140772 has 6 divisors (see below), whose sum is σ = 2138746358. Its totient is φ = 611070384.

The previous prime is 1222140713. The next prime is 1222140793. The reversal of 1222140772 is 2770412221.

It can be written as a sum of positive squares in only one way, i.e., 916030756 + 306110016 = 30266^2 + 17496^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1222140772.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152767593 + ... + 152767600.

Almost surely, 2^1222140772 is an apocalyptic number.

It is an amenable number.

1222140772 is a deficient number, since it is larger than the sum of its proper divisors (916605586).

1222140772 is a wasteful number, since it uses less digits than its factorization.

1222140772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305535197 (or 305535195 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 1222140772 is about 34959.1300235003. The cubic root of 1222140772 is about 1069.1543590725.

Adding to 1222140772 its reverse (2770412221), we get a palindrome (3992552993).

The spelling of 1222140772 in words is "one billion, two hundred twenty-two million, one hundred forty thousand, seven hundred seventy-two".