12121333332 has 12 divisors (see below), whose sum is σ = 28283111136. Its totient is φ = 4040444440.

The previous prime is 12121333307. The next prime is 12121333361. The reversal of 12121333332 is 23333312121.

It is a tau number, because it is divible by the number of its divisors (12).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505055544 + ... + 505055567.

It is an arithmetic number, because the mean of its divisors is an integer number (2356925928).

Almost surely, 2^12121333332 is an apocalyptic number.

12121333332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12121333332 is an abundant number, since it is smaller than the sum of its proper divisors (16161777804).

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

12121333332 is a wasteful number, since it uses less digits than its factorization.

12121333332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010111118 (or 1010111116 counting only the distinct ones).

The product of its digits is 1944, while the sum is 24.

Adding to 12121333332 its reverse (23333312121), we get a palindrome (35454645453).

The spelling of 12121333332 in words is "twelve billion, one hundred twenty-one million, three hundred thirty-three thousand, three hundred thirty-two".