212333120281 has 2 divisors, whose sum is σ = 212333120282. Its totient is φ = 212333120280.

The previous prime is 212333120273. The next prime is 212333120327. The reversal of 212333120281 is 182021333212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150074886025 + 62258234256 = 387395^2 + 249516^2 .

It is a cyclic number.

It is not a de Polignac number, because 212333120281 - 2³ = 212333120273 is a prime.

It is a super-2 number, since 2×212333120281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212633120281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106166560140 + 106166560141.

It is an arithmetic number, because the mean of its divisors is an integer number (106166560141).

Almost surely, 2^212333120281 is an apocalyptic number.

It is an amenable number.

212333120281 is a deficient number, since it is larger than the sum of its proper divisors (1).

212333120281 is an equidigital number, since it uses as much as digits as its factorization.

212333120281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 212333120281 its reverse (182021333212), we get a palindrome (394354453493).

The spelling of 212333120281 in words is "two hundred twelve billion, three hundred thirty-three million, one hundred twenty thousand, two hundred eighty-one".