21433011011 has 8 divisors (see below), whose sum is σ = 21590889600. Its totient is φ = 21275684352.

The previous prime is 21433010987. The next prime is 21433011013. The reversal of 21433011011 is 11011033412.

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 21433011011 - 2¹⁰ = 21433009987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21433011013) 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, 59870 + ... + 215523.

It is an arithmetic number, because the mean of its divisors is an integer number (2698861200).

Almost surely, 2^21433011011 is an apocalyptic number.

21433011011 is a deficient number, since it is larger than the sum of its proper divisors (157878589).

21433011011 is a wasteful number, since it uses less digits than its factorization.

21433011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275965.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21433011011 its reverse (11011033412), we get a palindrome (32444044423).

The spelling of 21433011011 in words is "twenty-one billion, four hundred thirty-three million, eleven thousand, eleven".