21202310133 has 24 divisors (see below), whose sum is σ = 32820822528. Its totient is φ = 13154895072.

The previous prime is 21202310123. The next prime is 21202310161. The reversal of 21202310133 is 33101320212.

21202310133 is a `hidden beast` number, since 21 + 202 + 310 + 133 = 666.

It is not a de Polignac number, because 21202310133 - 2²⁴ = 21185532917 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202310123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1376485 + ... + 1391802.

It is an arithmetic number, because the mean of its divisors is an integer number (1367534272).

Almost surely, 2^21202310133 is an apocalyptic number.

21202310133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21202310133 is a deficient number, since it is larger than the sum of its proper divisors (11618512395).

21202310133 is a wasteful number, since it uses less digits than its factorization.

21202310133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768353 (or 2768350 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21202310133 its reverse (33101320212), we get a palindrome (54303630345).

The spelling of 21202310133 in words is "twenty-one billion, two hundred two million, three hundred ten thousand, one hundred thirty-three".