33231021231012 has 192 divisors, whose sum is σ = 91422506649600. Its totient is φ = 9288520299520.

The previous prime is 33231021230881. The next prime is 33231021231013. The reversal of 33231021231012 is 21013212013233.

It is a super-2 number, since 2×33231021231012² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33231021231013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 70994323 + ... + 71460869.

It is an arithmetic number, because the mean of its divisors is an integer number (476158888800).

Almost surely, 2^{33231021231012} 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 33231021231012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45711253324800).

33231021231012 is an abundant number, since it is smaller than the sum of its proper divisors (58191485418588).

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

33231021231012 is a wasteful number, since it uses less digits than its factorization.

33231021231012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467426 (or 467424 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 33231021231012 its reverse (21013212013233), we get a palindrome (54244233244245).

The spelling of 33231021231012 in words is "thirty-three trillion, two hundred thirty-one billion, twenty-one million, two hundred thirty-one thousand, twelve".