1220222103818 has 8 divisors (see below), whose sum is σ = 1832105020548. Its totient is φ = 609520430304.

The previous prime is 1220222103817. The next prime is 1220222103899. The reversal of 1220222103818 is 8183012220221.

It can be written as a sum of positive squares in 2 ways, for example, as 771352923289 + 448869180529 = 878267^2 + 669977^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1220222103817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295308221 + ... + 295312352.

Almost surely, 2^{1220222103818} is an apocalyptic number.

1220222103818 is a deficient number, since it is larger than the sum of its proper divisors (611882916730).

1220222103818 is a wasteful number, since it uses less digits than its factorization.

1220222103818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590621608.

The product of its (nonzero) digits is 6144, while the sum is 32.

The spelling of 1220222103818 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, one hundred three thousand, eight hundred eighteen".