12211210005 has 8 divisors (see below), whose sum is σ = 19537936032. Its totient is φ = 6512645328.

The previous prime is 12211209991. The next prime is 12211210009. The reversal of 12211210005 is 50001211221.

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

It is not a de Polignac number, because 12211210005 - 2⁷ = 12211209877 is a prime.

It is a super-2 number, since 2×12211210005² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 814080667 = 12211210005 / (1 + 2 + 2 + 1 + 1 + 2 + 1 + 0 + 0 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211210009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407040319 + ... + 407040348.

It is an arithmetic number, because the mean of its divisors is an integer number (2442242004).

Almost surely, 2^12211210005 is an apocalyptic number.

12211210005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12211210005 is a deficient number, since it is larger than the sum of its proper divisors (7326726027).

12211210005 is an equidigital number, since it uses as much as digits as its factorization.

12211210005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814080675.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 12211210005 its reverse (50001211221), we get a palindrome (62212421226).

The spelling of 12211210005 in words is "twelve billion, two hundred eleven million, two hundred ten thousand, five".