21300311133 has 12 divisors (see below), whose sum is σ = 32386438240. Its totient is φ = 13452827976.

The previous prime is 21300311119. The next prime is 21300311161. The reversal of 21300311133 is 33111300312.

It is a happy number.

21300311133 is a `hidden beast` number, since 21 + 300 + 311 + 1 + 33 = 666.

It is not a de Polignac number, because 21300311133 - 2⁴ = 21300311117 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 (21300311173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62281441 + ... + 62281782.

Almost surely, 2^21300311133 is an apocalyptic number.

It is an amenable number.

21300311133 is a deficient number, since it is larger than the sum of its proper divisors (11086127107).

21300311133 is a wasteful number, since it uses less digits than its factorization.

21300311133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124563248 (or 124563245 counting only the distinct ones).

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

Adding to 21300311133 its reverse (33111300312), we get a palindrome (54411611445).

The spelling of 21300311133 in words is "twenty-one billion, three hundred million, three hundred eleven thousand, one hundred thirty-three".