1211033133 has 8 divisors (see below), whose sum is σ = 1794123200. Its totient is φ = 807355404.

The previous prime is 1211033129. The next prime is 1211033149. The reversal of 1211033133 is 3313301121.

It is a happy number.

It is not a de Polignac number, because 1211033133 - 2² = 1211033129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211033833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22426513 + ... + 22426566.

It is an arithmetic number, because the mean of its divisors is an integer number (224265400).

Almost surely, 2^1211033133 is an apocalyptic number.

It is an amenable number.

1211033133 is a deficient number, since it is larger than the sum of its proper divisors (583090067).

1211033133 is an equidigital number, since it uses as much as digits as its factorization.

1211033133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44853088 (or 44853082 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1211033133 is about 34799.9013360670. The cubic root of 1211033133 is about 1065.9054311619.

Adding to 1211033133 its reverse (3313301121), we get a palindrome (4524334254).

The spelling of 1211033133 in words is "one billion, two hundred eleven million, thirty-three thousand, one hundred thirty-three".