12211000001 has 4 divisors (see below), whose sum is σ = 12230727600. Its totient is φ = 12191272404.

The previous prime is 12210999979. The next prime is 12211000003. The reversal of 12211000001 is 10000011221.

12211000001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12211000001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211000003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9862871 + ... + 9864108.

It is an arithmetic number, because the mean of its divisors is an integer number (3057681900).

Almost surely, 2^12211000001 is an apocalyptic number.

It is an amenable number.

12211000001 is a deficient number, since it is larger than the sum of its proper divisors (19727599).

12211000001 is an equidigital number, since it uses as much as digits as its factorization.

12211000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19727598.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 12211000001 its reverse (10000011221), we get a palindrome (22211011222).

It can be divided in two parts, 1221 and 1000001, that multiplied together give a palindrome (1221001221).

The spelling of 12211000001 in words is "twelve billion, two hundred eleven million, one", and thus it is an aban number.