12212031144 has 32 divisors (see below), whose sum is σ = 30532835520. Its totient is φ = 4070309376.

The previous prime is 12212031131. The next prime is 12212031191. The reversal of 12212031144 is 44113021221.

It is a self number, because there is not a number n which added to its sum of digits gives 12212031144.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432549 + ... + 459915.

It is an arithmetic number, because the mean of its divisors is an integer number (954151110).

Almost surely, 2^12212031144 is an apocalyptic number.

It is an amenable number.

12212031144 is an abundant number, since it is smaller than the sum of its proper divisors (18320804376).

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

12212031144 is a wasteful number, since it uses less digits than its factorization.

12212031144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45969 (or 45965 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12212031144 its reverse (44113021221), we get a palindrome (56325052365).

The spelling of 12212031144 in words is "twelve billion, two hundred twelve million, thirty-one thousand, one hundred forty-four".