1321304254212 has 24 divisors (see below), whose sum is σ = 3120188361696. Its totient is φ = 435128308288.

The previous prime is 1321304254177. The next prime is 1321304254241. The reversal of 1321304254212 is 2124524031231.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321304254212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663304353 + ... + 663306344.

It is an arithmetic number, because the mean of its divisors is an integer number (130007848404).

Almost surely, 2^{1321304254212} is an apocalyptic number.

1321304254212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1321304254212 is an abundant number, since it is smaller than the sum of its proper divisors (1798884107484).

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

1321304254212 is a wasteful number, since it uses less digits than its factorization.

1321304254212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326610787 (or 1326610785 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 1321304254212 its reverse (2124524031231), we get a palindrome (3445828285443).

The spelling of 1321304254212 in words is "one trillion, three hundred twenty-one billion, three hundred four million, two hundred fifty-four thousand, two hundred twelve".