33331320021 has 8 divisors (see below), whose sum is σ = 46374010560. Its totient is φ = 21254754752.

The previous prime is 33331320013. The next prime is 33331320023. The reversal of 33331320021 is 12002313333.

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 33331320021 - 2³ = 33331320013 is a prime.

It is a super-2 number, since 2×33331320021² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33331320021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33331320023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241531236 + ... + 241531373.

It is an arithmetic number, because the mean of its divisors is an integer number (5796751320).

Almost surely, 2^33331320021 is an apocalyptic number.

It is an amenable number.

33331320021 is a deficient number, since it is larger than the sum of its proper divisors (13042690539).

33331320021 is a wasteful number, since it uses less digits than its factorization.

33331320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483062635.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 33331320021 its reverse (12002313333), we get a palindrome (45333633354).

The spelling of 33331320021 in words is "thirty-three billion, three hundred thirty-one million, three hundred twenty thousand, twenty-one".