33321000021 has 8 divisors (see below), whose sum is σ = 44439114720. Its totient is φ = 22208442672.

The previous prime is 33321000007. The next prime is 33321000023. The reversal of 33321000021 is 12000012333.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33321000021 - 2⁷ = 33320999893 is a prime.

It is a super-2 number, since 2×33321000021² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33321000023) 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, 1375326 + ... + 1399343.

It is an arithmetic number, because the mean of its divisors is an integer number (5554889340).

Almost surely, 2^33321000021 is an apocalyptic number.

It is an amenable number.

33321000021 is a deficient number, since it is larger than the sum of its proper divisors (11118114699).

33321000021 is a wasteful number, since it uses less digits than its factorization.

33321000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2778675.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 33321000021 its reverse (12000012333), we get a palindrome (45321012354).

The spelling of 33321000021 in words is "thirty-three billion, three hundred twenty-one million, twenty-one", and thus it is an aban number.