33000021233 has 4 divisors (see below), whose sum is σ = 33000660288. Its totient is φ = 32999382180.

The previous prime is 33000021227. The next prime is 33000021239. The reversal of 33000021233 is 33212000033.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (33000021227) and next prime (33000021239).

It is a cyclic number.

It is not a de Polignac number, because 33000021233 - 2³⁰ = 31926279409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33000021239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234533 + ... + 347858.

It is an arithmetic number, because the mean of its divisors is an integer number (8250165072).

Almost surely, 2^33000021233 is an apocalyptic number.

It is an amenable number.

33000021233 is a deficient number, since it is larger than the sum of its proper divisors (639055).

33000021233 is an equidigital number, since it uses as much as digits as its factorization.

33000021233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639054.

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 33000021233 its reverse (33212000033), we get a palindrome (66212021266).

The spelling of 33000021233 in words is "thirty-three billion, twenty-one thousand, two hundred thirty-three".