33331000021 has 8 divisors (see below), whose sum is σ = 38274832800. Its totient is φ = 28706124240.

The previous prime is 33330999971. The next prime is 33331000049. The reversal of 33331000021 is 12000013333.

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

It is a cyclic number.

It is not a de Polignac number, because 33331000021 - 2⁹ = 33330999509 is a prime.

It is a super-2 number, since 2×33331000021² (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 = 33330999959 and 33331000004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33331000421) 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, 79739026 + ... + 79739443.

It is an arithmetic number, because the mean of its divisors is an integer number (4784354100).

Almost surely, 2^33331000021 is an apocalyptic number.

It is an amenable number.

33331000021 is a deficient number, since it is larger than the sum of its proper divisors (4943832779).

33331000021 is a wasteful number, since it uses less digits than its factorization.

33331000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159478499.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 33331000021 its reverse (12000013333), we get a palindrome (45331013354).

The spelling of 33331000021 in words is "thirty-three billion, three hundred thirty-one million, twenty-one", and thus it is an aban number.