1211203334133 has 36 divisors (see below), whose sum is σ = 2001442551108. Its totient is φ = 701511413760.

The previous prime is 1211203334059. The next prime is 1211203334147. The reversal of 1211203334133 is 3314333021121.

1211203334133 is a `hidden beast` number, since 1 + 2 + 11 + 203 + 33 + 413 + 3 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 362788209 + 1210840545924 = 19047^2 + 1100382^2 .

It is not a de Polignac number, because 1211203334133 - 2²⁴ = 1211186556917 is a prime.

It is a super-2 number, since 2×1211203334133² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211203334097 and 1211203334106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211203334333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17876508 + ... + 17944133.

Almost surely, 2^{1211203334133} is an apocalyptic number.

1211203334133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1211203334133 is a deficient number, since it is larger than the sum of its proper divisors (790239216975).

1211203334133 is a wasteful number, since it uses less digits than its factorization.

1211203334133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35820694 (or 35820674 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 1211203334133 its reverse (3314333021121), we get a palindrome (4525536355254).

The spelling of 1211203334133 in words is "one trillion, two hundred eleven billion, two hundred three million, three hundred thirty-four thousand, one hundred thirty-three".