33321201012 has 288 divisors, whose sum is σ = 99017318400. Its totient is φ = 9706780800.

The previous prime is 33321201007. The next prime is 33321201049. The reversal of 33321201012 is 21010212333.

It is a super-2 number, since 2×33321201012² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 75902289 + ... + 75902727.

Almost surely, 2^33321201012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33321201012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49508659200).

33321201012 is an abundant number, since it is smaller than the sum of its proper divisors (65696117388).

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

33321201012 is a wasteful number, since it uses less digits than its factorization.

33321201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 715 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 33321201012 its reverse (21010212333), we get a palindrome (54331413345).

The spelling of 33321201012 in words is "thirty-three billion, three hundred twenty-one million, two hundred one thousand, twelve".