12211100009 has 2 divisors, whose sum is σ = 12211100010. Its totient is φ = 12211100008.

The previous prime is 12211100003. The next prime is 12211100147. The reversal of 12211100009 is 90000111221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10917115225 + 1293984784 = 104485^2 + 35972^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211100009 - 2³² = 7916132713 is a prime.

It is a super-2 number, since 2×12211100009² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12211100009.

It is not a weakly prime, because it can be changed into another prime (12211100003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105550004 + 6105550005.

It is an arithmetic number, because the mean of its divisors is an integer number (6105550005).

Almost surely, 2^12211100009 is an apocalyptic number.

It is an amenable number.

12211100009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211100009 is an equidigital number, since it uses as much as digits as its factorization.

12211100009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 12211100009 in words is "twelve billion, two hundred eleven million, one hundred thousand, nine".