1213320301321 has 16 divisors (see below), whose sum is σ = 1248193110528. Its totient is φ = 1178704710400.

The previous prime is 1213320301307. The next prime is 1213320301331. The reversal of 1213320301321 is 1231030233121.

It is a cyclic number.

It is not a de Polignac number, because 1213320301321 - 2¹⁵ = 1213320268553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213320301292 and 1213320301301.

It is not an unprimeable number, because it can be changed into a prime (1213320301301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17096316 + ... + 17167138.

It is an arithmetic number, because the mean of its divisors is an integer number (78012069408).

Almost surely, 2^{1213320301321} is an apocalyptic number.

It is an amenable number.

1213320301321 is a deficient number, since it is larger than the sum of its proper divisors (34872809207).

1213320301321 is a wasteful number, since it uses less digits than its factorization.

1213320301321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72632.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1213320301321 its reverse (1231030233121), we get a palindrome (2444350534442).

The spelling of 1213320301321 in words is "one trillion, two hundred thirteen billion, three hundred twenty million, three hundred one thousand, three hundred twenty-one".