21013232133 has 8 divisors (see below), whose sum is σ = 28043280928. Its totient is φ = 13996002384.

The previous prime is 21013232111. The next prime is 21013232159. The reversal of 21013232133 is 33123231012.

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

It is not a de Polignac number, because 21013232133 - 2²⁰ = 21012183557 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 (21013232033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3200935 + ... + 3207492.

It is an arithmetic number, because the mean of its divisors is an integer number (3505410116).

Almost surely, 2^21013232133 is an apocalyptic number.

It is an amenable number.

21013232133 is a deficient number, since it is larger than the sum of its proper divisors (7030048795).

21013232133 is a wasteful number, since it uses less digits than its factorization.

21013232133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6409523.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21013232133 its reverse (33123231012), we get a palindrome (54136463145).

The spelling of 21013232133 in words is "twenty-one billion, thirteen million, two hundred thirty-two thousand, one hundred thirty-three".