1221330003112 has 8 divisors (see below), whose sum is σ = 2289993755850. Its totient is φ = 610665001552.

The previous prime is 1221330003079. The next prime is 1221330003121. The reversal of 1221330003112 is 2113000331221.

It can be written as a sum of positive squares in only one way, i.e., 1161855475236 + 59474527876 = 1077894^2 + 243874^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1221330003112.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 76333125187 + ... + 76333125202.

Almost surely, 2^{1221330003112} is an apocalyptic number.

It is an amenable number.

1221330003112 is a deficient number, since it is larger than the sum of its proper divisors (1068663752738).

1221330003112 is a wasteful number, since it uses less digits than its factorization.

1221330003112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152666250395 (or 152666250391 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1221330003112 its reverse (2113000331221), we get a palindrome (3334330334333).

The spelling of 1221330003112 in words is "one trillion, two hundred twenty-one billion, three hundred thirty million, three thousand, one hundred twelve".