21023133322133 has 8 divisors (see below), whose sum is σ = 21028045811256. Its totient is φ = 21018221118400.

The previous prime is 21023133322073. The next prime is 21023133322153. The reversal of 21023133322133 is 33122333132012.

It can be written as a sum of positive squares in 4 ways, for example, as 5102570478769 + 15920562843364 = 2258887^2 + 3990058^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21023133322133 - 2²² = 21023129127829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21023133322096 and 21023133322105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023133322153) 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 7 ways as a sum of consecutive naturals, for example, 229612343 + ... + 229703883.

It is an arithmetic number, because the mean of its divisors is an integer number (2628505726407).

Almost surely, 2^{21023133322133} is an apocalyptic number.

It is an amenable number.

21023133322133 is a deficient number, since it is larger than the sum of its proper divisors (4912489123).

21023133322133 is an equidigital number, since it uses as much as digits as its factorization.

21023133322133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142695.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 21023133322133 its reverse (33122333132012), we get a palindrome (54145466454145).

The spelling of 21023133322133 in words is "twenty-one trillion, twenty-three billion, one hundred thirty-three million, three hundred twenty-two thousand, one hundred thirty-three".