21233133121033 has 4 divisors (see below), whose sum is σ = 22482140951700. Its totient is φ = 19984125290368.

The previous prime is 21233133121019. The next prime is 21233133121043. The reversal of 21233133121033 is 33012133133212.

It is a happy number.

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 8489746756089 + 12743386364944 = 2913717^2 + 3569788^2 .

It is a cyclic number.

It is not a de Polignac number, because 21233133121033 - 2⁵ = 21233133121001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21233133120992 and 21233133121010.

It is not an unprimeable number, because it can be changed into a prime (21233133121003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624503915308 + ... + 624503915341.

It is an arithmetic number, because the mean of its divisors is an integer number (5620535237925).

Almost surely, 2^{21233133121033} is an apocalyptic number.

It is an amenable number.

21233133121033 is a deficient number, since it is larger than the sum of its proper divisors (1249007830667).

21233133121033 is a wasteful number, since it uses less digits than its factorization.

21233133121033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249007830666.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 21233133121033 its reverse (33012133133212), we get a palindrome (54245266254245).

The spelling of 21233133121033 in words is "twenty-one trillion, two hundred thirty-three billion, one hundred thirty-three million, one hundred twenty-one thousand, thirty-three".