12121332 has 24 divisors (see below), whose sum is σ = 28461216. Its totient is φ = 4015008.

The previous prime is 12121331. The next prime is 12121337. The reversal of 12121332 is 23312121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1143 + ... + 5054.

It is an arithmetic number, because the mean of its divisors is an integer number (1185884).

Almost surely, 2^12121332 is an apocalyptic number.

12121332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12121332 is an abundant number, since it is smaller than the sum of its proper divisors (16339884).

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

12121332 is a wasteful number, since it uses less digits than its factorization.

12121332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6367 (or 6365 counting only the distinct ones).

The product of its digits is 72, while the sum is 15.

The square root of 12121332 is about 3481.5703353516. The cubic root of 12121332 is about 229.7118761394.

Adding to 12121332 its reverse (23312121), we get a palindrome (35433453).

The spelling of 12121332 in words is "twelve million, one hundred twenty-one thousand, three hundred thirty-two".