21443130233 has 8 divisors (see below), whose sum is σ = 24556349760. Its totient is φ = 18342389520.

The previous prime is 21443130223. The next prime is 21443130259. The reversal of 21443130233 is 33203134412.

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

It is not a de Polignac number, because 21443130233 - 2⁶ = 21443130169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21443130223) 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, 3116018 + ... + 3122891.

It is an arithmetic number, because the mean of its divisors is an integer number (3069543720).

Almost surely, 2^21443130233 is an apocalyptic number.

It is an amenable number.

21443130233 is a deficient number, since it is larger than the sum of its proper divisors (3113219527).

21443130233 is an equidigital number, since it uses as much as digits as its factorization.

21443130233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6239407.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21443130233 its reverse (33203134412), we get a palindrome (54646264645).

The spelling of 21443130233 in words is "twenty-one billion, four hundred forty-three million, one hundred thirty thousand, two hundred thirty-three".