212013020281 has 2 divisors, whose sum is σ = 212013020282. Its totient is φ = 212013020280.

The previous prime is 212013020249. The next prime is 212013020341. The reversal of 212013020281 is 182020310212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173089281600 + 38923738681 = 416040^2 + 197291^2 .

It is a cyclic number.

It is not a de Polignac number, because 212013020281 - 2⁵ = 212013020249 is a prime.

It is a super-2 number, since 2×212013020281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212013020981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006510140 + 106006510141.

It is an arithmetic number, because the mean of its divisors is an integer number (106006510141).

Almost surely, 2^212013020281 is an apocalyptic number.

It is an amenable number.

212013020281 is a deficient number, since it is larger than the sum of its proper divisors (1).

212013020281 is an equidigital number, since it uses as much as digits as its factorization.

212013020281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 212013020281 its reverse (182020310212), we get a palindrome (394033330493).

The spelling of 212013020281 in words is "two hundred twelve billion, thirteen million, twenty thousand, two hundred eighty-one".