21434020033 has 8 divisors (see below), whose sum is σ = 21532649600. Its totient is φ = 21335617728.

The previous prime is 21434019991. The next prime is 21434020051. The reversal of 21434020033 is 33002043412.

It is a happy number.

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 21434020033 - 2²⁵ = 21400465601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21434019986 and 21434020013.

It is not an unprimeable number, because it can be changed into a prime (21434020133) 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, 133708 + ... + 246466.

It is an arithmetic number, because the mean of its divisors is an integer number (2691581200).

Almost surely, 2^21434020033 is an apocalyptic number.

It is an amenable number.

21434020033 is a deficient number, since it is larger than the sum of its proper divisors (98629567).

21434020033 is a wasteful number, since it uses less digits than its factorization.

21434020033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113631.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21434020033 its reverse (33002043412), we get a palindrome (54436063445).

The spelling of 21434020033 in words is "twenty-one billion, four hundred thirty-four million, twenty thousand, thirty-three".