33200000021 has 4 divisors (see below), whose sum is σ = 33461417472. Its totient is φ = 32938582572.

The previous prime is 33200000017. The next prime is 33200000087. The reversal of 33200000021 is 12000000233.

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 not a de Polignac number, because 33200000021 - 2² = 33200000017 is a prime.

It is a super-2 number, since 2×33200000021² (a number of 22 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 = 33199999948 and 33200000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33200000011) 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, 130708535 + ... + 130708788.

It is an arithmetic number, because the mean of its divisors is an integer number (8365354368).

Almost surely, 2^33200000021 is an apocalyptic number.

It is an amenable number.

33200000021 is a deficient number, since it is larger than the sum of its proper divisors (261417451).

33200000021 is a wasteful number, since it uses less digits than its factorization.

33200000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261417450.

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 33200000021 its reverse (12000000233), we get a palindrome (45200000254).

The spelling of 33200000021 in words is "thirty-three billion, two hundred million, twenty-one", and thus it is an aban number.