12440133212 has 24 divisors (see below), whose sum is σ = 23686575696. Its totient is φ = 5682405888.

The previous prime is 12440133191. The next prime is 12440133221. The reversal of 12440133212 is 21233104421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1228118 + ... + 1238205.

It is an arithmetic number, because the mean of its divisors is an integer number (986940654).

Almost surely, 2^12440133212 is an apocalyptic number.

It is an amenable number.

12440133212 is a deficient number, since it is larger than the sum of its proper divisors (11246442484).

12440133212 is a wasteful number, since it uses less digits than its factorization.

12440133212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466437 (or 2466435 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12440133212 its reverse (21233104421), we get a palindrome (33673237633).

The spelling of 12440133212 in words is "twelve billion, four hundred forty million, one hundred thirty-three thousand, two hundred twelve".