21010010133 has 72 divisors (see below), whose sum is σ = 36439917600. Its totient is φ = 10704379392.

The previous prime is 21010010113. The next prime is 21010010149. The reversal of 21010010133 is 33101001012.

It is not a de Polignac number, because 21010010133 - 2⁶ = 21010010069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010010113) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 794163 + ... + 820191.

Almost surely, 2^21010010133 is an apocalyptic number.

It is an amenable number.

21010010133 is a deficient number, since it is larger than the sum of its proper divisors (15429907467).

21010010133 is a wasteful number, since it uses less digits than its factorization.

21010010133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26099 (or 26075 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21010010133 its reverse (33101001012), we get a palindrome (54111011145).

The spelling of 21010010133 in words is "twenty-one billion, ten million, ten thousand, one hundred thirty-three".