33123300221 has 4 divisors (see below), whose sum is σ = 36134509344. Its totient is φ = 30112091100.

The previous prime is 33123300193. The next prime is 33123300227. The reversal of 33123300221 is 12200332133.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33123300221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33123300193 and 33123300202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33123300227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1505604545 + ... + 1505604566.

It is an arithmetic number, because the mean of its divisors is an integer number (9033627336).

Almost surely, 2^33123300221 is an apocalyptic number.

It is an amenable number.

33123300221 is a deficient number, since it is larger than the sum of its proper divisors (3011209123).

33123300221 is a wasteful number, since it uses less digits than its factorization.

33123300221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011209122.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 33123300221 its reverse (12200332133), we get a palindrome (45323632354).

The spelling of 33123300221 in words is "thirty-three billion, one hundred twenty-three million, three hundred thousand, two hundred twenty-one".