12201218435 has 12 divisors (see below), whose sum is σ = 16733995824. Its totient is φ = 8366101680.

The previous prime is 12201218417. The next prime is 12201218441. The reversal of 12201218435 is 53481210221.

It is a happy number.

It is not a de Polignac number, because 12201218435 - 2⁸ = 12201218179 is a prime.

It is a super-3 number, since 3×12201218435³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12201218398 and 12201218407.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 644150 + ... + 662820.

It is an arithmetic number, because the mean of its divisors is an integer number (1394499652).

Almost surely, 2^12201218435 is an apocalyptic number.

12201218435 is a deficient number, since it is larger than the sum of its proper divisors (4532777389).

12201218435 is an frugal number, since it uses more digits than its factorization.

12201218435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37354 (or 18683 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

Adding to 12201218435 its reverse (53481210221), we get a palindrome (65682428656).

The spelling of 12201218435 in words is "twelve billion, two hundred one million, two hundred eighteen thousand, four hundred thirty-five".