1211011320443 has 2 divisors, whose sum is σ = 1211011320444. Its totient is φ = 1211011320442.

The previous prime is 1211011320361. The next prime is 1211011320469. The reversal of 1211011320443 is 3440231101121.

It is a strong prime.

It is an emirp because it is prime and its reverse (3440231101121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211011320443 - 2¹⁴ = 1211011304059 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211011329443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605505660221 + 605505660222.

It is an arithmetic number, because the mean of its divisors is an integer number (605505660222).

Almost surely, 2^{1211011320443} is an apocalyptic number.

1211011320443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211011320443 is an equidigital number, since it uses as much as digits as its factorization.

1211011320443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1211011320443 its reverse (3440231101121), we get a palindrome (4651242421564).

The spelling of 1211011320443 in words is "one trillion, two hundred eleven billion, eleven million, three hundred twenty thousand, four hundred forty-three".