21134020133 has 8 divisors (see below), whose sum is σ = 21243750528. Its totient is φ = 21024512784.

The previous prime is 21134020091. The next prime is 21134020157. The reversal of 21134020133 is 33102043112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21134020133 - 2⁶ = 21134020069 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 (21134020933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135935 + ... + 246467.

It is an arithmetic number, because the mean of its divisors is an integer number (2655468816).

Almost surely, 2^21134020133 is an apocalyptic number.

It is an amenable number.

21134020133 is a deficient number, since it is larger than the sum of its proper divisors (109730395).

21134020133 is a wasteful number, since it uses less digits than its factorization.

21134020133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111523.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21134020133 its reverse (33102043112), we get a palindrome (54236063245).

The spelling of 21134020133 in words is "twenty-one billion, one hundred thirty-four million, twenty thousand, one hundred thirty-three".