12121204411441 has 2 divisors, whose sum is σ = 12121204411442. Its totient is φ = 12121204411440.

The previous prime is 12121204411409. The next prime is 12121204411471. The reversal of 12121204411441 is 14411440212121.

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., 6565873260816 + 5555331150625 = 2562396^2 + 2356975^2 .

It is an emirp because it is prime and its reverse (14411440212121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12121204411441 - 2⁵ = 12121204411409 is a prime.

It is not a weakly prime, because it can be changed into another prime (12121204411471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060602205720 + 6060602205721.

It is an arithmetic number, because the mean of its divisors is an integer number (6060602205721).

Almost surely, 2^{12121204411441} is an apocalyptic number.

It is an amenable number.

12121204411441 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121204411441 is an equidigital number, since it uses as much as digits as its factorization.

12121204411441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2048, while the sum is 28.

Adding to 12121204411441 its reverse (14411440212121), we get a palindrome (26532644623562).

The spelling of 12121204411441 in words is "twelve trillion, one hundred twenty-one billion, two hundred four million, four hundred eleven thousand, four hundred forty-one".