20232221233 has 4 divisors (see below), whose sum is σ = 23122538560. Its totient is φ = 17341903908.

The previous prime is 20232221221. The next prime is 20232221257. The reversal of 20232221233 is 33212223202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20232221233 - 2²⁹ = 19695350321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20232221533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445158653 + ... + 1445158666.

It is an arithmetic number, because the mean of its divisors is an integer number (5780634640).

Almost surely, 2^20232221233 is an apocalyptic number.

It is an amenable number.

20232221233 is a deficient number, since it is larger than the sum of its proper divisors (2890317327).

20232221233 is an equidigital number, since it uses as much as digits as its factorization.

20232221233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890317326.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20232221233 its reverse (33212223202), we get a palindrome (53444444435).

The spelling of 20232221233 in words is "twenty billion, two hundred thirty-two million, two hundred twenty-one thousand, two hundred thirty-three".