12420367215 has 16 divisors (see below), whose sum is σ = 19893728736. Its totient is φ = 6617148800.

The previous prime is 12420367213. The next prime is 12420367247. The reversal of 12420367215 is 51276302421.

It is not a de Polignac number, because 12420367215 - 2¹ = 12420367213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420367213) 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, 425856 + ... + 454085.

It is an arithmetic number, because the mean of its divisors is an integer number (1243358046).

Almost surely, 2^12420367215 is an apocalyptic number.

12420367215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12420367215 is a deficient number, since it is larger than the sum of its proper divisors (7473361521).

12420367215 is an equidigital number, since it uses as much as digits as its factorization.

12420367215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880890.

The product of its (nonzero) digits is 20160, while the sum is 33.

Adding to 12420367215 its reverse (51276302421), we get a palindrome (63696669636).

The spelling of 12420367215 in words is "twelve billion, four hundred twenty million, three hundred sixty-seven thousand, two hundred fifteen".