2012211202321 has 2 divisors, whose sum is σ = 2012211202322. Its totient is φ = 2012211202320.

The previous prime is 2012211202319. The next prime is 2012211202327. The reversal of 2012211202321 is 1232021122102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1967398969600 + 44812232721 = 1402640^2 + 211689^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012211202321 - 2¹ = 2012211202319 is a prime.

It is a super-2 number, since 2×2012211202321² (a number of 25 digits) contains 22 as substring.

Together with 2012211202319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2012211202327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006105601160 + 1006105601161.

It is an arithmetic number, because the mean of its divisors is an integer number (1006105601161).

Almost surely, 2^{2012211202321} is an apocalyptic number.

It is an amenable number.

2012211202321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012211202321 is an equidigital number, since it uses as much as digits as its factorization.

2012211202321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2012211202321 its reverse (1232021122102), we get a palindrome (3244232324423).

The spelling of 2012211202321 in words is "two trillion, twelve billion, two hundred eleven million, two hundred two thousand, three hundred twenty-one".