213303021133 has 4 divisors (see below), whose sum is σ = 214661639260. Its totient is φ = 211944403008.

The previous prime is 213303021119. The next prime is 213303021157. The reversal of 213303021133 is 331120303312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141133959684 + 72169061449 = 375678^2 + 268643^2 .

It is a cyclic number.

It is not a de Polignac number, because 213303021133 - 2²¹ = 213300923981 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 (213303021103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 679308828 + ... + 679309141.

It is an arithmetic number, because the mean of its divisors is an integer number (53665409815).

Almost surely, 2^213303021133 is an apocalyptic number.

It is an amenable number.

213303021133 is a deficient number, since it is larger than the sum of its proper divisors (1358618127).

213303021133 is a wasteful number, since it uses less digits than its factorization.

213303021133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358618126.

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

Adding to 213303021133 its reverse (331120303312), we get a palindrome (544423324445).

The spelling of 213303021133 in words is "two hundred thirteen billion, three hundred three million, twenty-one thousand, one hundred thirty-three".