1321330304212 has 12 divisors (see below), whose sum is σ = 2312676478420. Its totient is φ = 660565596096.

The previous prime is 1321330304143. The next prime is 1321330304219. The reversal of 1321330304212 is 2124030331231.

It can be written as a sum of positive squares in 2 ways, for example, as 5661659536 + 1315668644676 = 75244^2 + 1147026^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321330304219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24859137 + ... + 24912232.

Almost surely, 2^{1321330304212} is an apocalyptic number.

It is an amenable number.

1321330304212 is a deficient number, since it is larger than the sum of its proper divisors (991346174208).

1321330304212 is a wasteful number, since it uses less digits than its factorization.

1321330304212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49778010 (or 49778008 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1321330304212 its reverse (2124030331231), we get a palindrome (3445360635443).

The spelling of 1321330304212 in words is "one trillion, three hundred twenty-one billion, three hundred thirty million, three hundred four thousand, two hundred twelve".