33121212132 has 24 divisors (see below), whose sum is σ = 81828877536. Its totient is φ = 10390968448.

The previous prime is 33121212073. The next prime is 33121212181. The reversal of 33121212132 is 23121212133.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 33121212099 and 33121212108.

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, 81179238 + ... + 81179645.

It is an arithmetic number, because the mean of its divisors is an integer number (3409536564).

Almost surely, 2^33121212132 is an apocalyptic number.

It is an amenable number.

33121212132 is an abundant number, since it is smaller than the sum of its proper divisors (48707665404).

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

33121212132 is a wasteful number, since it uses less digits than its factorization.

33121212132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162358907 (or 162358905 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 33121212132 its reverse (23121212133), we get a palindrome (56242424265).

Subtracting from 33121212132 its reverse (23121212133), we obtain a palindrome (9999999999).

The spelling of 33121212132 in words is "thirty-three billion, one hundred twenty-one million, two hundred twelve thousand, one hundred thirty-two".