21133443017 has 8 divisors (see below), whose sum is σ = 21929497920. Its totient is φ = 20351232720.

The previous prime is 21133443011. The next prime is 21133443047. The reversal of 21133443017 is 71034433112.

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 21133443017 - 2⁸ = 21133442761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21133443011) 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, 3458042 + ... + 3464147.

It is an arithmetic number, because the mean of its divisors is an integer number (2741187240).

Almost surely, 2^21133443017 is an apocalyptic number.

It is an amenable number.

21133443017 is a deficient number, since it is larger than the sum of its proper divisors (796054903).

21133443017 is an equidigital number, since it uses as much as digits as its factorization.

21133443017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6922303.

The product of its (nonzero) digits is 6048, while the sum is 29.

Adding to 21133443017 its reverse (71034433112), we get a palindrome (92167876129).

The spelling of 21133443017 in words is "twenty-one billion, one hundred thirty-three million, four hundred forty-three thousand, seventeen".