1211050133 has 2 divisors, whose sum is σ = 1211050134. Its totient is φ = 1211050132.

The previous prime is 1211050129. The next prime is 1211050187. The reversal of 1211050133 is 3310501121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1189353169 + 21696964 = 34487^2 + 4658^2 .

It is an emirp because it is prime and its reverse (3310501121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211050133 - 2² = 1211050129 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211052133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605525066 + 605525067.

It is an arithmetic number, because the mean of its divisors is an integer number (605525067).

Almost surely, 2^1211050133 is an apocalyptic number.

It is an amenable number.

1211050133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211050133 is an equidigital number, since it uses as much as digits as its factorization.

1211050133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1211050133 is about 34800.1455887759. The cubic root of 1211050133 is about 1065.9104187236.

Adding to 1211050133 its reverse (3310501121), we get a palindrome (4521551254).

The spelling of 1211050133 in words is "one billion, two hundred eleven million, fifty thousand, one hundred thirty-three".