123331203212 has 12 divisors (see below), whose sum is σ = 246662406480. Its totient is φ = 52856229936.

The previous prime is 123331203181. The next prime is 123331203217. The reversal of 123331203212 is 212302133321.

123331203212 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (123331203217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2202342887 + ... + 2202342942.

It is an arithmetic number, because the mean of its divisors is an integer number (20555200540).

Almost surely, 2^123331203212 is an apocalyptic number.

It is an amenable number.

123331203212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

123331203212 is a wasteful number, since it uses less digits than its factorization.

123331203212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404685840 (or 4404685838 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 123331203212 its reverse (212302133321), we get a palindrome (335633336533).

The spelling of 123331203212 in words is "one hundred twenty-three billion, three hundred thirty-one million, two hundred three thousand, two hundred twelve".