12045211205 has 8 divisors (see below), whose sum is σ = 15082699392. Its totient is φ = 9217205008.

The previous prime is 12045211201. The next prime is 12045211223. The reversal of 12045211205 is 50211254021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12045211205 - 2² = 12045211201 is a prime.

It is a super-2 number, since 2×12045211205² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12045211201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52370369 + ... + 52370598.

It is an arithmetic number, because the mean of its divisors is an integer number (1885337424).

Almost surely, 2^12045211205 is an apocalyptic number.

It is an amenable number.

12045211205 is a deficient number, since it is larger than the sum of its proper divisors (3037488187).

12045211205 is a wasteful number, since it uses less digits than its factorization.

12045211205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104740995.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 12045211205 its reverse (50211254021), we get a palindrome (62256465226).

The spelling of 12045211205 in words is "twelve billion, forty-five million, two hundred eleven thousand, two hundred five".