1201113310811 has 2 divisors, whose sum is σ = 1201113310812. Its totient is φ = 1201113310810.

The previous prime is 1201113310783. The next prime is 1201113310823. The reversal of 1201113310811 is 1180133111021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201113310811 - 2²² = 1201109116507 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201113310511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600556655405 + 600556655406.

It is an arithmetic number, because the mean of its divisors is an integer number (600556655406).

Almost surely, 2^{1201113310811} is an apocalyptic number.

1201113310811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201113310811 is an equidigital number, since it uses as much as digits as its factorization.

1201113310811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

Adding to 1201113310811 its reverse (1180133111021), we get a palindrome (2381246421832).

The spelling of 1201113310811 in words is "one trillion, two hundred one billion, one hundred thirteen million, three hundred ten thousand, eight hundred eleven".