1201310203321 has 4 divisors (see below), whose sum is σ = 1233778046692. Its totient is φ = 1168842359952.

The previous prime is 1201310203307. The next prime is 1201310203337. The reversal of 1201310203321 is 1233020131021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 430645687696 + 770664515625 = 656236^2 + 877875^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201310203321 - 2¹⁵ = 1201310170553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201310203381) 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, 16233921630 + ... + 16233921703.

It is an arithmetic number, because the mean of its divisors is an integer number (308444511673).

Almost surely, 2^{1201310203321} is an apocalyptic number.

It is an amenable number.

1201310203321 is a deficient number, since it is larger than the sum of its proper divisors (32467843371).

1201310203321 is an equidigital number, since it uses as much as digits as its factorization.

1201310203321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32467843370.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1201310203321 its reverse (1233020131021), we get a palindrome (2434330334342).

The spelling of 1201310203321 in words is "one trillion, two hundred one billion, three hundred ten million, two hundred three thousand, three hundred twenty-one".