1201211133 has 32 divisors (see below), whose sum is σ = 1711466496. Its totient is φ = 747709248.

The previous prime is 1201211119. The next prime is 1201211147. The reversal of 1201211133 is 3311121021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1201211119) and next prime (1201211147).

It is not a de Polignac number, because 1201211133 - 2⁶ = 1201211069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201211633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 829416 + ... + 830862.

It is an arithmetic number, because the mean of its divisors is an integer number (53483328).

Almost surely, 2^1201211133 is an apocalyptic number.

It is an amenable number.

1201211133 is a deficient number, since it is larger than the sum of its proper divisors (510255363).

1201211133 is a wasteful number, since it uses less digits than its factorization.

1201211133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1201211133 is about 34658.4929418462. The cubic root of 1201211133 is about 1063.0159547705.

Adding to 1201211133 its reverse (3311121021), we get a palindrome (4512332154).

The spelling of 1201211133 in words is "one billion, two hundred one million, two hundred eleven thousand, one hundred thirty-three".