12254541211261 has 2 divisors, whose sum is σ = 12254541211262. Its totient is φ = 12254541211260.

The previous prime is 12254541211243. The next prime is 12254541211271. The reversal of 12254541211261 is 16211214545221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8995140656100 + 3259400555161 = 2999190^2 + 1805381^2 .

It is an emirp because it is prime and its reverse (16211214545221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12254541211261 - 2¹⁷ = 12254541080189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12254541211261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12254541211271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6127270605630 + 6127270605631.

It is an arithmetic number, because the mean of its divisors is an integer number (6127270605631).

Almost surely, 2^{12254541211261} is an apocalyptic number.

It is an amenable number.

12254541211261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12254541211261 is an equidigital number, since it uses as much as digits as its factorization.

12254541211261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 37.

Adding to 12254541211261 its reverse (16211214545221), we get a palindrome (28465755756482).

The spelling of 12254541211261 in words is "twelve trillion, two hundred fifty-four billion, five hundred forty-one million, two hundred eleven thousand, two hundred sixty-one".