1222280272 has 10 divisors (see below), whose sum is σ = 2368168058. Its totient is φ = 611140128.

The previous prime is 1222280251. The next prime is 1222280281. The reversal of 1222280272 is 2720822221.

It can be written as a sum of positive squares in only one way, i.e., 1077414976 + 144865296 = 32824^2 + 12036^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1222280272.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38196243 + ... + 38196274.

Almost surely, 2^1222280272 is an apocalyptic number.

It is an amenable number.

1222280272 is a deficient number, since it is larger than the sum of its proper divisors (1145887786).

1222280272 is an equidigital number, since it uses as much as digits as its factorization.

1222280272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76392525 (or 76392519 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 1222280272 is about 34961.1251535187. The cubic root of 1222280272 is about 1069.1950366993.

The spelling of 1222280272 in words is "one billion, two hundred twenty-two million, two hundred eighty thousand, two hundred seventy-two".