20232221333 has 4 divisors (see below), whose sum is σ = 20725690188. Its totient is φ = 19738752480.

The previous prime is 20232221329. The next prime is 20232221363. The reversal of 20232221333 is 33312223202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33312223202 = 2 ⋅16656111601.

It can be written as a sum of positive squares in 2 ways, for example, as 3612370609 + 16619850724 = 60103^2 + 128918^2 .

It is a cyclic number.

It is not a de Polignac number, because 20232221333 - 2² = 20232221329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20232221299 and 20232221308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20232221363) 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, 246734366 + ... + 246734447.

It is an arithmetic number, because the mean of its divisors is an integer number (5181422547).

Almost surely, 2^20232221333 is an apocalyptic number.

It is an amenable number.

20232221333 is a deficient number, since it is larger than the sum of its proper divisors (493468855).

20232221333 is an equidigital number, since it uses as much as digits as its factorization.

20232221333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493468854.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20232221333 its reverse (33312223202), we get a palindrome (53544444535).

The spelling of 20232221333 in words is "twenty billion, two hundred thirty-two million, two hundred twenty-one thousand, three hundred thirty-three".