12407220520 has 32 divisors (see below), whose sum is σ = 28816773120. Its totient is φ = 4802794560.

The previous prime is 12407220509. The next prime is 12407220521. The reversal of 12407220520 is 2502270421.

It is not an unprimeable number, because it can be changed into a prime (12407220521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5001672 + ... + 5004151.

It is an arithmetic number, because the mean of its divisors is an integer number (900524160).

Almost surely, 2^12407220520 is an apocalyptic number.

12407220520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12407220520 is an abundant number, since it is smaller than the sum of its proper divisors (16409552600).

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

12407220520 is a wasteful number, since it uses less digits than its factorization.

12407220520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10005865 (or 10005861 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

Adding to 12407220520 its reverse (2502270421), we get a palindrome (14909490941).

The spelling of 12407220520 in words is "twelve billion, four hundred seven million, two hundred twenty thousand, five hundred twenty".