1321426226012 has 24 divisors (see below), whose sum is σ = 2392248348672. Its totient is φ = 638018766000.

The previous prime is 1321426225957. The next prime is 1321426226017. The reversal of 1321426226012 is 2106226241231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321426226012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321426226017) 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 7 ways as a sum of consecutive naturals, for example, 11450864 + ... + 11565687.

It is an arithmetic number, because the mean of its divisors is an integer number (99677014528).

Almost surely, 2^{1321426226012} is an apocalyptic number.

It is an amenable number.

1321426226012 is a deficient number, since it is larger than the sum of its proper divisors (1070822122660).

1321426226012 is a wasteful number, since it uses less digits than its factorization.

1321426226012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23017049 (or 23017047 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 1321426226012 in words is "one trillion, three hundred twenty-one billion, four hundred twenty-six million, two hundred twenty-six thousand, twelve".