121333212 has 324 divisors, whose sum is σ = 432844776. Its totient is φ = 28304640.

The previous prime is 121333207. The next prime is 121333231. The reversal of 121333212 is 212333121.

121333212 is a `hidden beast` number, since 121 + 333 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 (17) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 3279258 + ... + 3279294.

Almost surely, 2^121333212 is an apocalyptic number.

121333212 is a gapful number since it is divisible by the number (12) 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 121333212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216422388).

121333212 is an abundant number, since it is smaller than the sum of its proper divisors (311511564).

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

121333212 is a wasteful number, since it uses less digits than its factorization.

121333212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 73 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 121333212 is about 11015.1355870003. The cubic root of 121333212 is about 495.0623490487.

Adding to 121333212 its reverse (212333121), we get a palindrome (333666333).

Subtracting 121333212 from its reverse (212333121), we obtain a palindrome (90999909).

It can be divided in two parts, 121 and 333212, that added together give a palindrome (333333).

The spelling of 121333212 in words is "one hundred twenty-one million, three hundred thirty-three thousand, two hundred twelve".