211230321012281 has 2 divisors, whose sum is σ = 211230321012282. Its totient is φ = 211230321012280.

The previous prime is 211230321012251. The next prime is 211230321012311. The reversal of 211230321012281 is 182210123032112.

It is a balanced prime because it is at equal distance from previous prime (211230321012251) and next prime (211230321012311).

It can be written as a sum of positive squares in only one way, i.e., 210507453765625 + 722867246656 = 14508875^2 + 850216^2 .

It is a cyclic number.

It is not a de Polignac number, because 211230321012281 - 2¹⁰ = 211230321011257 is a prime.

It is a super-2 number, since 2×211230321012281² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211230321012251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105615160506140 + 105615160506141.

It is an arithmetic number, because the mean of its divisors is an integer number (105615160506141).

Almost surely, 2^{211230321012281} is an apocalyptic number.

It is an amenable number.

211230321012281 is a deficient number, since it is larger than the sum of its proper divisors (1).

211230321012281 is an equidigital number, since it uses as much as digits as its factorization.

211230321012281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

Adding to 211230321012281 its reverse (182210123032112), we get a palindrome (393440444044393).

The spelling of 211230321012281 in words is "two hundred eleven trillion, two hundred thirty billion, three hundred twenty-one million, twelve thousand, two hundred eighty-one".