21233023133 has 8 divisors (see below), whose sum is σ = 24858173760. Its totient is φ = 17755837920.

The previous prime is 21233023121. The next prime is 21233023151. The reversal of 21233023133 is 33132033212.

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 21233023133 - 2¹⁶ = 21232957597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21233023099 and 21233023108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233023033) 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, 36991043 + ... + 36991616.

It is an arithmetic number, because the mean of its divisors is an integer number (3107271720).

Almost surely, 2^21233023133 is an apocalyptic number.

It is an amenable number.

21233023133 is a deficient number, since it is larger than the sum of its proper divisors (3625150627).

21233023133 is an equidigital number, since it uses as much as digits as its factorization.

21233023133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73982707.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21233023133 its reverse (33132033212), we get a palindrome (54365056345).

The spelling of 21233023133 in words is "twenty-one billion, two hundred thirty-three million, twenty-three thousand, one hundred thirty-three".