12211001197 has 8 divisors (see below), whose sum is σ = 12611831544. Its totient is φ = 11816483328.

The previous prime is 12211001191. The next prime is 12211001221. The reversal of 12211001197 is 79110011221.

It can be written as a sum of positive squares in 4 ways, for example, as 7039377801 + 5171623396 = 83901^2 + 71914^2 .

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 12211001197 - 2³ = 12211001189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211001191) 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, 1574188 + ... + 1581925.

It is an arithmetic number, because the mean of its divisors is an integer number (1576478943).

Almost surely, 2^12211001197 is an apocalyptic number.

It is an amenable number.

12211001197 is a deficient number, since it is larger than the sum of its proper divisors (400830347).

12211001197 is an equidigital number, since it uses as much as digits as its factorization.

12211001197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156239.

The product of its (nonzero) digits is 252, while the sum is 25.

The spelling of 12211001197 in words is "twelve billion, two hundred eleven million, one thousand, one hundred ninety-seven".