1323121012012 has 12 divisors (see below), whose sum is σ = 2315472078640. Its totient is φ = 661557560976.

The previous prime is 1323121012009. The next prime is 1323121012027. The reversal of 1323121012012 is 2102101213231.

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, 508393 + ... + 1704319.

Almost surely, 2^{1323121012012} is an apocalyptic number.

It is an amenable number.

1323121012012 is a deficient number, since it is larger than the sum of its proper divisors (992351066628).

1323121012012 is a wasteful number, since it uses less digits than its factorization.

1323121012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472520 (or 1472518 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1323121012012 its reverse (2102101213231), we get a palindrome (3425222225243).

The spelling of 1323121012012 in words is "one trillion, three hundred twenty-three billion, one hundred twenty-one million, twelve thousand, twelve".