1222888945 has 8 divisors (see below), whose sum is σ = 1468710144. Its totient is φ = 977482224.

The previous prime is 1222888943. The next prime is 1222888967. The reversal of 1222888945 is 5498882221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222888945 - 2¹ = 1222888943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222888943) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 97089 + ... + 108958.

It is an arithmetic number, because the mean of its divisors is an integer number (183588768).

Almost surely, 2^1222888945 is an apocalyptic number.

It is an amenable number.

1222888945 is a deficient number, since it is larger than the sum of its proper divisors (245821199).

1222888945 is a wasteful number, since it uses less digits than its factorization.

1222888945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207239.

The product of its digits is 737280, while the sum is 49.

The square root of 1222888945 is about 34969.8290673546. The cubic root of 1222888945 is about 1069.3724870403.

The spelling of 1222888945 in words is "one billion, two hundred twenty-two million, eight hundred eighty-eight thousand, nine hundred forty-five".