213012133 has 2 divisors, whose sum is σ = 213012134. Its totient is φ = 213012132.

The previous prime is 213012109. The next prime is 213012161. The reversal of 213012133 is 331210312.

213012133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209178369 + 3833764 = 14463^2 + 1958^2 .

It is a cyclic number.

It is not a de Polignac number, because 213012133 - 2⁵ = 213012101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213012433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106506066 + 106506067.

It is an arithmetic number, because the mean of its divisors is an integer number (106506067).

Almost surely, 2^213012133 is an apocalyptic number.

It is an amenable number.

213012133 is a deficient number, since it is larger than the sum of its proper divisors (1).

213012133 is an equidigital number, since it uses as much as digits as its factorization.

213012133 is an evil number, because the sum of its binary digits is even.

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

The square root of 213012133 is about 14594.9351831380. The cubic root of 213012133 is about 597.2206012665.

Adding to 213012133 its reverse (331210312), we get a palindrome (544222445).

The spelling of 213012133 in words is "two hundred thirteen million, twelve thousand, one hundred thirty-three".