12420201512 has 16 divisors (see below), whose sum is σ = 23327559360. Its totient is φ = 6199519024.

The previous prime is 12420201509. The next prime is 12420201517. The reversal of 12420201512 is 21510202421.

It is a super-2 number, since 2×12420201512² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12420201517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1317728 + ... + 1327119.

It is an arithmetic number, because the mean of its divisors is an integer number (1457972460).

Almost surely, 2^12420201512 is an apocalyptic number.

It is an amenable number.

12420201512 is a deficient number, since it is larger than the sum of its proper divisors (10907357848).

12420201512 is a wasteful number, since it uses less digits than its factorization.

12420201512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645440 (or 2645436 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 12420201512 its reverse (21510202421), we get a palindrome (33930403933).

Subtracting 12420201512 from its reverse (21510202421), we obtain a palindrome (9090000909).

The spelling of 12420201512 in words is "twelve billion, four hundred twenty million, two hundred one thousand, five hundred twelve".