3121234321212 has 72 divisors (see below), whose sum is σ = 9350858398336. Its totient is φ = 891781232688.

The previous prime is 3121234321199. The next prime is 3121234321253. The reversal of 3121234321212 is 2121234321213.

3121234321212 is a `hidden beast` number, since 3 + 1 + 2 + 12 + 3 + 432 + 1 + 212 = 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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229360798 + ... + 229374405.

Almost surely, 2^{3121234321212} is an apocalyptic number.

It is an amenable number.

3121234321212 is an abundant number, since it is smaller than the sum of its proper divisors (6229624077124).

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

3121234321212 is a wasteful number, since it uses less digits than its factorization.

3121234321212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458735229 (or 458735215 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 3121234321212 its reverse (2121234321213), we get a palindrome (5242468642425).

Subtracting from 3121234321212 its reverse (2121234321213), we obtain a palindrome (999999999999).

The spelling of 3121234321212 in words is "three trillion, one hundred twenty-one billion, two hundred thirty-four million, three hundred twenty-one thousand, two hundred twelve".