213321133333 has 36 divisors (see below), whose sum is σ = 272854593900. Its totient is φ = 166165950720.

The previous prime is 213321133219. The next prime is 213321133357. The reversal of 213321133333 is 333331123312.

It can be written as a sum of positive squares in 2 ways, for example, as 68983446609 + 144337686724 = 262647^2 + 379918^2 .

It is not a de Polignac number, because 213321133333 - 2⁹ = 213321132821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213321133633) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25781085 + ... + 25789357.

It is an arithmetic number, because the mean of its divisors is an integer number (7579294275).

Almost surely, 2^213321133333 is an apocalyptic number.

It is an amenable number.

213321133333 is a deficient number, since it is larger than the sum of its proper divisors (59533460567).

213321133333 is a wasteful number, since it uses less digits than its factorization.

213321133333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12658 (or 12640 counting only the distinct ones).

The product of its digits is 8748, while the sum is 28.

Adding to 213321133333 its reverse (333331123312), we get a palindrome (546652256645).

The spelling of 213321133333 in words is "two hundred thirteen billion, three hundred twenty-one million, one hundred thirty-three thousand, three hundred thirty-three".