12123012 has 24 divisors (see below), whose sum is σ = 30858912. Its totient is φ = 3673600.

The previous prime is 12122987. The next prime is 12123017. The reversal of 12123012 is 21032121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12123017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45789 + ... + 46052.

It is an arithmetic number, because the mean of its divisors is an integer number (1285788).

Almost surely, 2^12123012 is an apocalyptic number.

12123012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12123012 is an abundant number, since it is smaller than the sum of its proper divisors (18735900).

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

12123012 is a wasteful number, since it uses less digits than its factorization.

12123012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91859 (or 91857 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 12123012 is about 3481.8115974303. The cubic root of 12123012 is about 229.7224882328.

Adding to 12123012 its reverse (21032121), we get a palindrome (33155133).

It can be divided in two parts, 1212 and 3012, that added together give a palindrome (4224).

The spelling of 12123012 in words is "twelve million, one hundred twenty-three thousand, twelve".