12421200205 has 16 divisors (see below), whose sum is σ = 14949857664. Its totient is φ = 9907391680.

The previous prime is 12421200191. The next prime is 12421200217. The reversal of 12421200205 is 50200212421.

It is not a de Polignac number, because 12421200205 - 2⁵ = 12421200173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3587175 + ... + 3590635.

It is an arithmetic number, because the mean of its divisors is an integer number (934366104).

Almost surely, 2^12421200205 is an apocalyptic number.

It is an amenable number.

12421200205 is a deficient number, since it is larger than the sum of its proper divisors (2528657459).

12421200205 is a wasteful number, since it uses less digits than its factorization.

12421200205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5396.

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 12421200205 its reverse (50200212421), we get a palindrome (62621412626).

The spelling of 12421200205 in words is "twelve billion, four hundred twenty-one million, two hundred thousand, two hundred five".