1323230221012 has 18 divisors (see below), whose sum is σ = 2693718664602. Its totient is φ = 567098666064.

The previous prime is 1323230220967. The next prime is 1323230221021. The reversal of 1323230221012 is 2101220323231.

It can be written as a sum of positive squares in only one way, i.e., 788977403536 + 534252817476 = 888244^2 + 730926^2 .

It is a congruent number.

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 in 5 ways as a sum of consecutive naturals, for example, 3375587103 + ... + 3375587494.

Almost surely, 2^{1323230221012} is an apocalyptic number.

It is an amenable number.

1323230221012 is an abundant number, since it is smaller than the sum of its proper divisors (1370488443590).

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

1323230221012 is a wasteful number, since it uses less digits than its factorization.

1323230221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6751174615 (or 6751174606 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1323230221012 its reverse (2101220323231), we get a palindrome (3424450544243).

The spelling of 1323230221012 in words is "one trillion, three hundred twenty-three billion, two hundred thirty million, two hundred twenty-one thousand, twelve".