12143222340 has 24 divisors (see below), whose sum is σ = 34001022720. Its totient is φ = 3238192608.

The previous prime is 12143222339. The next prime is 12143222423. The reversal of 12143222340 is 4322234121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12143222340.

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, 101193460 + ... + 101193579.

It is an arithmetic number, because the mean of its divisors is an integer number (1416709280).

Almost surely, 2^12143222340 is an apocalyptic number.

12143222340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12143222340 is an abundant number, since it is smaller than the sum of its proper divisors (21857800380).

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

12143222340 is a wasteful number, since it uses less digits than its factorization.

12143222340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202387051 (or 202387049 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12143222340 its reverse (4322234121), we get a palindrome (16465456461).

The spelling of 12143222340 in words is "twelve billion, one hundred forty-three million, two hundred twenty-two thousand, three hundred forty".