12211243121047 has 2 divisors, whose sum is σ = 12211243121048. Its totient is φ = 12211243121046.

The previous prime is 12211243121023. The next prime is 12211243121083. The reversal of 12211243121047 is 74012134211221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12211243121047 - 2²⁷ = 12211108903319 is a prime.

It is a super-2 number, since 2×12211243121047² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12211243121447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105621560523 + 6105621560524.

It is an arithmetic number, because the mean of its divisors is an integer number (6105621560524).

Almost surely, 2^{12211243121047} is an apocalyptic number.

12211243121047 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211243121047 is an equidigital number, since it uses as much as digits as its factorization.

12211243121047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

Adding to 12211243121047 its reverse (74012134211221), we get a palindrome (86223377332268).

The spelling of 12211243121047 in words is "twelve trillion, two hundred eleven billion, two hundred forty-three million, one hundred twenty-one thousand, forty-seven".