33031003212012 has 144 divisors (see below), whose sum is σ = 84886739441280. Its totient is φ = 9989337705984.

The previous prime is 33031003211971. The next prime is 33031003212013. The reversal of 33031003212012 is 21021230013033.

It is a super-2 number, since 2×33031003212012² (a number of 28 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 33031003212012.

It is not an unprimeable number, because it can be changed into a prime (33031003212013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 768981928 + ... + 769024880.

It is an arithmetic number, because the mean of its divisors is an integer number (589491246120).

Almost surely, 2^{33031003212012} 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 33031003212012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42443369720640).

33031003212012 is an abundant number, since it is smaller than the sum of its proper divisors (51855736229268).

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

33031003212012 is a wasteful number, since it uses less digits than its factorization.

33031003212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49472 (or 49457 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 33031003212012 its reverse (21021230013033), we get a palindrome (54052233225045).

The spelling of 33031003212012 in words is "thirty-three trillion, thirty-one billion, three million, two hundred twelve thousand, twelve".