21133230033 has 8 divisors (see below), whose sum is σ = 28178512096. Its totient is φ = 14088384000.

The previous prime is 21133229989. The next prime is 21133230109. The reversal of 21133230033 is 33003233112.

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

It is not a de Polignac number, because 21133230033 - 2⁹ = 21133229521 is a prime.

It is a super-2 number, since 2×21133230033² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21133229991 and 21133230009.

It is not an unprimeable number, because it can be changed into a prime (21133230133) 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, 29073 + ... + 207633.

It is an arithmetic number, because the mean of its divisors is an integer number (3522314012).

Almost surely, 2^21133230033 is an apocalyptic number.

It is an amenable number.

21133230033 is a deficient number, since it is larger than the sum of its proper divisors (7045282063).

21133230033 is a wasteful number, since it uses less digits than its factorization.

21133230033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218015.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21133230033 its reverse (33003233112), we get a palindrome (54136463145).

The spelling of 21133230033 in words is "twenty-one billion, one hundred thirty-three million, two hundred thirty thousand, thirty-three".