1221324030343 has 4 divisors (see below), whose sum is σ = 1221332910120. Its totient is φ = 1221315150568.

The previous prime is 1221324030281. The next prime is 1221324030347. The reversal of 1221324030343 is 3430304231221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1221324030343 - 2³⁷ = 1083885076871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221324030347) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4230280 + ... + 4509757.

It is an arithmetic number, because the mean of its divisors is an integer number (305333227530).

Almost surely, 2^{1221324030343} is an apocalyptic number.

1221324030343 is a deficient number, since it is larger than the sum of its proper divisors (8879777).

1221324030343 is an equidigital number, since it uses as much as digits as its factorization.

1221324030343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8879776.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 1221324030343 its reverse (3430304231221), we get a palindrome (4651628261564).

The spelling of 1221324030343 in words is "one trillion, two hundred twenty-one billion, three hundred twenty-four million, thirty thousand, three hundred forty-three".