12120204340 has 48 divisors (see below), whose sum is σ = 26088459264. Its totient is φ = 4727072000.

The previous prime is 12120204307. The next prime is 12120204347. The reversal of 12120204340 is 4340202121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120204347) 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, 1924677 + ... + 1930963.

It is an arithmetic number, because the mean of its divisors is an integer number (543509568).

Almost surely, 2^12120204340 is an apocalyptic number.

12120204340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120204340 is an abundant number, since it is smaller than the sum of its proper divisors (13968254924).

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

12120204340 is a wasteful number, since it uses less digits than its factorization.

12120204340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8688 (or 8686 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12120204340 its reverse (4340202121), we get a palindrome (16460406461).

The spelling of 12120204340 in words is "twelve billion, one hundred twenty million, two hundred four thousand, three hundred forty".