221210343000281 has 2 divisors, whose sum is σ = 221210343000282. Its totient is φ = 221210343000280.

The previous prime is 221210343000223. The next prime is 221210343000313. The reversal of 221210343000281 is 182000343012122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220463579136256 + 746763864025 = 14848016^2 + 864155^2 .

It is a cyclic number.

It is not a de Polignac number, because 221210343000281 - 2¹⁴ = 221210342983897 is a prime.

It is a super-2 number, since 2×221210343000281² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (221210343000221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605171500140 + 110605171500141.

It is an arithmetic number, because the mean of its divisors is an integer number (110605171500141).

Almost surely, 2^{221210343000281} is an apocalyptic number.

It is an amenable number.

221210343000281 is a deficient number, since it is larger than the sum of its proper divisors (1).

221210343000281 is an equidigital number, since it uses as much as digits as its factorization.

221210343000281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 221210343000281 in words is "two hundred twenty-one trillion, two hundred ten billion, three hundred forty-three million, two hundred eighty-one", and thus it is an aban number.