12211465136449 has 2 divisors, whose sum is σ = 12211465136450. Its totient is φ = 12211465136448.

The previous prime is 12211465136419. The next prime is 12211465136509. The reversal of 12211465136449 is 94463156411221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11903928342849 + 307536793600 = 3450207^2 + 554560^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211465136449 - 2³³ = 12202875201857 is a prime.

It is not a weakly prime, because it can be changed into another prime (12211465136419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105732568224 + 6105732568225.

It is an arithmetic number, because the mean of its divisors is an integer number (6105732568225).

Almost surely, 2^{12211465136449} is an apocalyptic number.

It is an amenable number.

12211465136449 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211465136449 is an equidigital number, since it uses as much as digits as its factorization.

12211465136449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 49.

The spelling of 12211465136449 in words is "twelve trillion, two hundred eleven billion, four hundred sixty-five million, one hundred thirty-six thousand, four hundred forty-nine".