12340001220 has 24 divisors (see below), whose sum is σ = 34552003584. Its totient is φ = 3290666976.

The previous prime is 12340001203. The next prime is 12340001299. The reversal of 12340001220 is 2210004321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12340001220.

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, 102833284 + ... + 102833403.

It is an arithmetic number, because the mean of its divisors is an integer number (1439666816).

Almost surely, 2^12340001220 is an apocalyptic number.

12340001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12340001220 is an abundant number, since it is smaller than the sum of its proper divisors (22212002364).

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

12340001220 is a wasteful number, since it uses less digits than its factorization.

12340001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205666699 (or 205666697 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 12340001220 its reverse (2210004321), we get a palindrome (14550005541).

The spelling of 12340001220 in words is "twelve billion, three hundred forty million, one thousand, two hundred twenty".