1212033013321 has 8 divisors (see below), whose sum is σ = 1326664131464. Its totient is φ = 1100458725120.

The previous prime is 1212033013307. The next prime is 1212033013339. The reversal of 1212033013321 is 1233103302121.

It can be written as a sum of positive squares in 4 ways, for example, as 31472534025 + 1180560479296 = 177405^2 + 1086536^2 .

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 1212033013321 - 2¹⁹ = 1212032489033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212033013292 and 1212033013301.

It is not an unprimeable number, because it can be changed into a prime (1212033013361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 764206656 + ... + 764208241.

It is an arithmetic number, because the mean of its divisors is an integer number (165833016433).

Almost surely, 2^{1212033013321} is an apocalyptic number.

It is an amenable number.

1212033013321 is a deficient number, since it is larger than the sum of its proper divisors (114631118143).

1212033013321 is a wasteful number, since it uses less digits than its factorization.

1212033013321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528414971.

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

Adding to 1212033013321 its reverse (1233103302121), we get a palindrome (2445136315442).

The spelling of 1212033013321 in words is "one trillion, two hundred twelve billion, thirty-three million, thirteen thousand, three hundred twenty-one".