12205413243 has 12 divisors (see below), whose sum is σ = 18396565200. Its totient is φ = 7783161936.

The previous prime is 12205413239. The next prime is 12205413247. The reversal of 12205413243 is 34231450221.

12205413243 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 5 + 413 + 243 = 666.

It is an interprime number because it is at equal distance from previous prime (12205413239) and next prime (12205413247).

It is not a de Polignac number, because 12205413243 - 2² = 12205413239 is a prime.

It is a super-2 number, since 2×12205413243² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12205413247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29481468 + ... + 29481881.

It is an arithmetic number, because the mean of its divisors is an integer number (1533047100).

Almost surely, 2^12205413243 is an apocalyptic number.

12205413243 is a deficient number, since it is larger than the sum of its proper divisors (6191151957).

12205413243 is a wasteful number, since it uses less digits than its factorization.

12205413243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58963378 (or 58963375 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 12205413243 its reverse (34231450221), we get a palindrome (46436863464).

The spelling of 12205413243 in words is "twelve billion, two hundred five million, four hundred thirteen thousand, two hundred forty-three".