12031120212 has 48 divisors (see below), whose sum is σ = 29151854592. Its totient is φ = 3857747040.

The previous prime is 12031120147. The next prime is 12031120217. The reversal of 12031120212 is 21202113021.

It is a junction number, because it is equal to n+sod(n) for n = 12031120191 and 12031120200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031120217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34708 + ... + 158955.

It is an arithmetic number, because the mean of its divisors is an integer number (607330304).

Almost surely, 2^12031120212 is an apocalyptic number.

12031120212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12031120212 is an abundant number, since it is smaller than the sum of its proper divisors (17120734380).

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

12031120212 is a wasteful number, since it uses less digits than its factorization.

12031120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193868 (or 193866 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12031120212 its reverse (21202113021), we get a palindrome (33233233233).

The spelling of 12031120212 in words is "twelve billion, thirty-one million, one hundred twenty thousand, two hundred twelve".