2012030321321 has 2 divisors, whose sum is σ = 2012030321322. Its totient is φ = 2012030321320.

The previous prime is 2012030321317. The next prime is 2012030321351. The reversal of 2012030321321 is 1231230302102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1249333765696 + 762696555625 = 1117736^2 + 873325^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012030321321 - 2² = 2012030321317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012030321293 and 2012030321302.

It is not a weakly prime, because it can be changed into another prime (2012030321351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006015160660 + 1006015160661.

It is an arithmetic number, because the mean of its divisors is an integer number (1006015160661).

Almost surely, 2^{2012030321321} is an apocalyptic number.

It is an amenable number.

2012030321321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012030321321 is an equidigital number, since it uses as much as digits as its factorization.

2012030321321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2012030321321 its reverse (1231230302102), we get a palindrome (3243260623423).

The spelling of 2012030321321 in words is "two trillion, twelve billion, thirty million, three hundred twenty-one thousand, three hundred twenty-one".