21323222230033 has 4 divisors (see below), whose sum is σ = 21324136589028. Its totient is φ = 21322307871040.

The previous prime is 21323222230019. The next prime is 21323222230039. The reversal of 21323222230033 is 33003222232312.

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 10925325401104 + 10397896828929 = 3305348^2 + 3224577^2 .

It is a cyclic number.

It is not a de Polignac number, because 21323222230033 - 2³³ = 21314632295441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21323222229983 and 21323222230010.

It is not an unprimeable number, because it can be changed into a prime (21323222230039) 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, 457144516 + ... + 457191157.

It is an arithmetic number, because the mean of its divisors is an integer number (5331034147257).

Almost surely, 2^{21323222230033} is an apocalyptic number.

It is an amenable number.

21323222230033 is a deficient number, since it is larger than the sum of its proper divisors (914358995).

21323222230033 is an equidigital number, since it uses as much as digits as its factorization.

21323222230033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914358994.

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 21323222230033 its reverse (33003222232312), we get a palindrome (54326444462345).

The spelling of 21323222230033 in words is "twenty-one trillion, three hundred twenty-three billion, two hundred twenty-two million, two hundred thirty thousand, thirty-three".