21322121030233 has 4 divisors (see below), whose sum is σ = 21322250569780. Its totient is φ = 21321991490688.

The previous prime is 21322121030207. The next prime is 21322121030279. The reversal of 21322121030233 is 33203012122312.

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 14327640624969 + 6994480405264 = 3785187^2 + 2644708^2 .

It is a cyclic number.

It is not a de Polignac number, because 21322121030233 - 2⁵ = 21322121030201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21322121030198 and 21322121030207.

It is not an unprimeable number, because it can be changed into a prime (21322121030293) 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, 64522560 + ... + 64852177.

It is an arithmetic number, because the mean of its divisors is an integer number (5330562642445).

Almost surely, 2^{21322121030233} is an apocalyptic number.

It is an amenable number.

21322121030233 is a deficient number, since it is larger than the sum of its proper divisors (129539547).

21322121030233 is a wasteful number, since it uses less digits than its factorization.

21322121030233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129539546.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21322121030233 its reverse (33203012122312), we get a palindrome (54525133152545).

The spelling of 21322121030233 in words is "twenty-one trillion, three hundred twenty-two billion, one hundred twenty-one million, thirty thousand, two hundred thirty-three".