1211413133 has 12 divisors (see below), whose sum is σ = 1454654592. Its totient is φ = 1004857560.

The previous prime is 1211413123. The next prime is 1211413139. The reversal of 1211413133 is 3313141121.

It is not a de Polignac number, because 1211413133 - 2⁴ = 1211413117 is a prime.

It is a super-3 number, since 3×1211413133³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211413139) 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 in 11 ways as a sum of consecutive naturals, for example, 397235 + ... + 400272.

It is an arithmetic number, because the mean of its divisors is an integer number (121221216).

Almost surely, 2^1211413133 is an apocalyptic number.

It is an amenable number.

1211413133 is a deficient number, since it is larger than the sum of its proper divisors (243241459).

1211413133 is an equidigital number, since it uses as much as digits as its factorization.

1211413133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797552 (or 797545 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

The square root of 1211413133 is about 34805.3606934334. The cubic root of 1211413133 is about 1066.0169066988.

Adding to 1211413133 its reverse (3313141121), we get a palindrome (4524554254).

The spelling of 1211413133 in words is "one billion, two hundred eleven million, four hundred thirteen thousand, one hundred thirty-three".