1211120331133 has 2 divisors, whose sum is σ = 1211120331134. Its totient is φ = 1211120331132.

The previous prime is 1211120331103. The next prime is 1211120331139. The reversal of 1211120331133 is 3311330211121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1199697424249 + 11422906884 = 1095307^2 + 106878^2 .

It is an emirp because it is prime and its reverse (3311330211121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211120331133 - 2⁹ = 1211120330621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211120331139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605560165566 + 605560165567.

It is an arithmetic number, because the mean of its divisors is an integer number (605560165567).

Almost surely, 2^{1211120331133} is an apocalyptic number.

It is an amenable number.

1211120331133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211120331133 is an equidigital number, since it uses as much as digits as its factorization.

1211120331133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1211120331133 its reverse (3311330211121), we get a palindrome (4522450542254).

The spelling of 1211120331133 in words is "one trillion, two hundred eleven billion, one hundred twenty million, three hundred thirty-one thousand, one hundred thirty-three".