213213030133 has 16 divisors (see below), whose sum is σ = 230440193136. Its totient is φ = 196520463360.

The previous prime is 213213030131. The next prime is 213213030161. The reversal of 213213030133 is 331030312312.

It can be written as a sum of positive squares in 8 ways, for example, as 14174807364 + 199038222769 = 119058^2 + 446137^2 .

It is a cyclic number.

It is not a de Polignac number, because 213213030133 - 2¹ = 213213030131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213213030131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268735 + ... + 706147.

It is an arithmetic number, because the mean of its divisors is an integer number (14402512071).

Almost surely, 2^213213030133 is an apocalyptic number.

It is an amenable number.

213213030133 is a deficient number, since it is larger than the sum of its proper divisors (17227163003).

213213030133 is a wasteful number, since it uses less digits than its factorization.

213213030133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438024.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 213213030133 its reverse (331030312312), we get a palindrome (544243342445).

The spelling of 213213030133 in words is "two hundred thirteen billion, two hundred thirteen million, thirty thousand, one hundred thirty-three".