33123013312 has 56 divisors (see below), whose sum is σ = 67574231120. Its totient is φ = 16097356800.

The previous prime is 33123013303. The next prime is 33123013361. The reversal of 33123013312 is 21331032133.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2482114 + ... + 2495422.

Almost surely, 2^33123013312 is an apocalyptic number.

33123013312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33123013312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33787115560).

33123013312 is an abundant number, since it is smaller than the sum of its proper divisors (34451217808).

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

33123013312 is a wasteful number, since it uses less digits than its factorization.

33123013312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14409 (or 14399 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 33123013312 its reverse (21331032133), we get a palindrome (54454045445).

The spelling of 33123013312 in words is "thirty-three billion, one hundred twenty-three million, thirteen thousand, three hundred twelve".