33000221320 has 32 divisors (see below), whose sum is σ = 81000544320. Its totient is φ = 12000080320.

The previous prime is 33000221297. The next prime is 33000221323. The reversal of 33000221320 is 2312200033.

It is a junction number, because it is equal to n+sod(n) for n = 33000221294 and 33000221303.

It is not an unprimeable number, because it can be changed into a prime (33000221323) 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, 37499812 + ... + 37500691.

It is an arithmetic number, because the mean of its divisors is an integer number (2531267010).

Almost surely, 2^33000221320 is an apocalyptic number.

It is an amenable number.

33000221320 is an abundant number, since it is smaller than the sum of its proper divisors (48000323000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33000221320 is a wasteful number, since it uses less digits than its factorization.

33000221320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75000525 (or 75000521 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 33000221320 its reverse (2312200033), we get a palindrome (35312421353).

The spelling of 33000221320 in words is "thirty-three billion, two hundred twenty-one thousand, three hundred twenty".