21133030311 has 12 divisors (see below), whose sum is σ = 30529566288. Its totient is φ = 14086804704.

The previous prime is 21133030291. The next prime is 21133030339. The reversal of 21133030311 is 11303033112.

It is a happy number.

21133030311 is a `hidden beast` number, since 21 + 1 + 330 + 3 + 0 + 311 = 666.

It is not a de Polignac number, because 21133030311 - 2¹¹ = 21133028263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21133034311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83955 + ... + 222068.

It is an arithmetic number, because the mean of its divisors is an integer number (2544130524).

Almost surely, 2^21133030311 is an apocalyptic number.

21133030311 is a deficient number, since it is larger than the sum of its proper divisors (9396535977).

21133030311 is a wasteful number, since it uses less digits than its factorization.

21133030311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313702 (or 313699 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21133030311 its reverse (11303033112), we get a palindrome (32436063423).

The spelling of 21133030311 in words is "twenty-one billion, one hundred thirty-three million, thirty thousand, three hundred eleven".