121233433212 has 120 divisors (see below), whose sum is σ = 326898267696. Its totient is φ = 39149298432.

The previous prime is 121233433201. The next prime is 121233433213. The reversal of 121233433212 is 212334332121.

121233433212 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 334 + 3 + 321 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 (121233433213) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2771503 + ... + 2814905.

Almost surely, 2^121233433212 is an apocalyptic number.

121233433212 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 121233433212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163449133848).

121233433212 is an abundant number, since it is smaller than the sum of its proper divisors (205664834484).

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

121233433212 is a wasteful number, since it uses less digits than its factorization.

121233433212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43689 (or 43678 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 121233433212 its reverse (212334332121), we get a palindrome (333567765333).

The spelling of 121233433212 in words is "one hundred twenty-one billion, two hundred thirty-three million, four hundred thirty-three thousand, two hundred twelve".