21034143133 has 4 divisors (see below), whose sum is σ = 21077334880. Its totient is φ = 20990951388.

The previous prime is 21034143107. The next prime is 21034143187. The reversal of 21034143133 is 33134143012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21034143133 - 2⁵ = 21034143101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21034143098 and 21034143107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034143233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21595143 + ... + 21596116.

It is an arithmetic number, because the mean of its divisors is an integer number (5269333720).

Almost surely, 2^21034143133 is an apocalyptic number.

It is an amenable number.

21034143133 is a deficient number, since it is larger than the sum of its proper divisors (43191747).

21034143133 is an equidigital number, since it uses as much as digits as its factorization.

21034143133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43191746.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21034143133 its reverse (33134143012), we get a palindrome (54168286145).

The spelling of 21034143133 in words is "twenty-one billion, thirty-four million, one hundred forty-three thousand, one hundred thirty-three".