1200111210941 has 2 divisors, whose sum is σ = 1200111210942. Its totient is φ = 1200111210940.

The previous prime is 1200111210911. The next prime is 1200111211007. The reversal of 1200111210941 is 1490121110021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1090834024900 + 109277186041 = 1044430^2 + 330571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200111210941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200111210911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600055605470 + 600055605471.

It is an arithmetic number, because the mean of its divisors is an integer number (600055605471).

Almost surely, 2^{1200111210941} is an apocalyptic number.

It is an amenable number.

1200111210941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200111210941 is an equidigital number, since it uses as much as digits as its factorization.

1200111210941 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 1200111210941 its reverse (1490121110021), we get a palindrome (2690232320962).

The spelling of 1200111210941 in words is "one trillion, two hundred billion, one hundred eleven million, two hundred ten thousand, nine hundred forty-one".