789123221012 has 12 divisors (see below), whose sum is σ = 1578246442080. Its totient is φ = 338195666136.

The previous prime is 789123220999. The next prime is 789123221063. The reversal of 789123221012 is 210122321987.

789123221012 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14091486062 + ... + 14091486117.

It is an arithmetic number, because the mean of its divisors is an integer number (131520536840).

Almost surely, 2^789123221012 is an apocalyptic number.

It is an amenable number.

789123221012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

789123221012 is a wasteful number, since it uses less digits than its factorization.

789123221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28182972190 (or 28182972188 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

Adding to 789123221012 its reverse (210122321987), we get a palindrome (999245542999).

The spelling of 789123221012 in words is "seven hundred eighty-nine billion, one hundred twenty-three million, two hundred twenty-one thousand, twelve".