4123321212 has 12 divisors (see below), whose sum is σ = 9621082856. Its totient is φ = 1374440400.

The previous prime is 4123321211. The next prime is 4123321217. The reversal of 4123321212 is 2121233214.

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 not an unprimeable number, because it can be changed into a prime (4123321211) by changing a digit.

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, 171805039 + ... + 171805062.

Almost surely, 2^4123321212 is an apocalyptic number.

It is an amenable number.

4123321212 is an abundant number, since it is smaller than the sum of its proper divisors (5497761644).

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

4123321212 is a wasteful number, since it uses less digits than its factorization.

4123321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343610108 (or 343610106 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 4123321212 is about 64213.0922164631. The cubic root of 4123321212 is about 1603.5495690058.

Adding to 4123321212 its reverse (2121233214), we get a palindrome (6244554426).

The spelling of 4123321212 in words is "four billion, one hundred twenty-three million, three hundred twenty-one thousand, two hundred twelve".