3012213123221 has 2 divisors, whose sum is σ = 3012213123222. Its totient is φ = 3012213123220.

The previous prime is 3012213123211. The next prime is 3012213123223. The reversal of 3012213123221 is 1223213122103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2461804932196 + 550408191025 = 1569014^2 + 741895^2 .

It is a cyclic number.

It is not a de Polignac number, because 3012213123221 - 2¹⁰ = 3012213122197 is a prime.

It is a super-2 number, since 2×3012213123221² (a number of 26 digits) contains 22 as substring.

Together with 3012213123223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3012213123223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1506106561610 + 1506106561611.

It is an arithmetic number, because the mean of its divisors is an integer number (1506106561611).

Almost surely, 2^{3012213123221} is an apocalyptic number.

It is an amenable number.

3012213123221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3012213123221 is an equidigital number, since it uses as much as digits as its factorization.

3012213123221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 3012213123221 its reverse (1223213122103), we get a palindrome (4235426245324).

The spelling of 3012213123221 in words is "three trillion, twelve billion, two hundred thirteen million, one hundred twenty-three thousand, two hundred twenty-one".