1221030133012 has 12 divisors (see below), whose sum is σ = 2137049451936. Its totient is φ = 610444575320.

The previous prime is 1221030133009. The next prime is 1221030133021. The reversal of 1221030133012 is 2103310301221.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17583814 + ... + 17653117.

It is an arithmetic number, because the mean of its divisors is an integer number (178087454328).

Almost surely, 2^{1221030133012} is an apocalyptic number.

It is an amenable number.

1221030133012 is a deficient number, since it is larger than the sum of its proper divisors (916019318924).

1221030133012 is a wasteful number, since it uses less digits than its factorization.

1221030133012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35245598 (or 35245596 counting only the distinct ones).

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

Adding to 1221030133012 its reverse (2103310301221), we get a palindrome (3324340434233).

The spelling of 1221030133012 in words is "one trillion, two hundred twenty-one billion, thirty million, one hundred thirty-three thousand, twelve".