21033233030113 has 4 divisors (see below), whose sum is σ = 21033642854340. Its totient is φ = 21032823205888.

The previous prime is 21033233029997. The next prime is 21033233030123. The reversal of 21033233030113 is 31103033233012.

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 13666389388864 + 7366843641249 = 3696808^2 + 2714193^2 .

It is a cyclic number.

It is not a de Polignac number, because 21033233030113 - 2⁴¹ = 18834209774561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21033233030123) 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, 204835120 + ... + 204937777.

It is an arithmetic number, because the mean of its divisors is an integer number (5258410713585).

Almost surely, 2^{21033233030113} is an apocalyptic number.

It is an amenable number.

21033233030113 is a deficient number, since it is larger than the sum of its proper divisors (409824227).

21033233030113 is an equidigital number, since it uses as much as digits as its factorization.

21033233030113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409824226.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 21033233030113 its reverse (31103033233012), we get a palindrome (52136266263125).

The spelling of 21033233030113 in words is "twenty-one trillion, thirty-three billion, two hundred thirty-three million, thirty thousand, one hundred thirteen".