212013133 has 2 divisors, whose sum is σ = 212013134. Its totient is φ = 212013132.

The previous prime is 212013121. The next prime is 212013161. The reversal of 212013133 is 331310212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132411049 + 79602084 = 11507^2 + 8922^2 .

It is a cyclic number.

It is not a de Polignac number, because 212013133 - 2⁵ = 212013101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212013163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006566 + 106006567.

It is an arithmetic number, because the mean of its divisors is an integer number (106006567).

Almost surely, 2^212013133 is an apocalyptic number.

It is an amenable number.

212013133 is a deficient number, since it is larger than the sum of its proper divisors (1).

212013133 is an equidigital number, since it uses as much as digits as its factorization.

212013133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 212013133 is about 14560.6707606484. The cubic root of 212013133 is about 596.2855081866.

Adding to 212013133 its reverse (331310212), we get a palindrome (543323345).

The spelling of 212013133 in words is "two hundred twelve million, thirteen thousand, one hundred thirty-three".