1211133023033 has 4 divisors (see below), whose sum is σ = 1213095962100. Its totient is φ = 1209170083968.

The previous prime is 1211133023011. The next prime is 1211133023057. The reversal of 1211133023033 is 3303203311121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 271652567209 + 939480455824 = 521203^2 + 969268^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211133023033 - 2⁸ = 1211133022777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211133023003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 981468608 + ... + 981469841.

It is an arithmetic number, because the mean of its divisors is an integer number (303273990525).

Almost surely, 2^{1211133023033} is an apocalyptic number.

It is an amenable number.

1211133023033 is a deficient number, since it is larger than the sum of its proper divisors (1962939067).

1211133023033 is an equidigital number, since it uses as much as digits as its factorization.

1211133023033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962939066.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1211133023033 its reverse (3303203311121), we get a palindrome (4514336334154).

The spelling of 1211133023033 in words is "one trillion, two hundred eleven billion, one hundred thirty-three million, twenty-three thousand, thirty-three".