1221413230321 has 8 divisors (see below), whose sum is σ = 1287014122080. Its totient is φ = 1155943937088.

The previous prime is 1221413230307. The next prime is 1221413230339. The reversal of 1221413230321 is 1230323141221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221413230321 - 2³⁹ = 671657416433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221413230721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32880571 + ... + 32917696.

It is an arithmetic number, because the mean of its divisors is an integer number (160876765260).

Almost surely, 2^{1221413230321} is an apocalyptic number.

It is an amenable number.

1221413230321 is a deficient number, since it is larger than the sum of its proper divisors (65600891759).

1221413230321 is an equidigital number, since it uses as much as digits as its factorization.

1221413230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65799263.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1221413230321 its reverse (1230323141221), we get a palindrome (2451736371542).

The spelling of 1221413230321 in words is "one trillion, two hundred twenty-one billion, four hundred thirteen million, two hundred thirty thousand, three hundred twenty-one".