20202440233 has 2 divisors, whose sum is σ = 20202440234. Its totient is φ = 20202440232.

The previous prime is 20202440173. The next prime is 20202440239. The reversal of 20202440233 is 33204420202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12907913769 + 7294526464 = 113613^2 + 85408^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202440233 - 2²⁵ = 20168885801 is a prime.

It is not a weakly prime, because it can be changed into another prime (20202440239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101220116 + 10101220117.

It is an arithmetic number, because the mean of its divisors is an integer number (10101220117).

Almost surely, 2^20202440233 is an apocalyptic number.

It is an amenable number.

20202440233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202440233 is an equidigital number, since it uses as much as digits as its factorization.

20202440233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 20202440233 its reverse (33204420202), we get a palindrome (53406860435).

The spelling of 20202440233 in words is "twenty billion, two hundred two million, four hundred forty thousand, two hundred thirty-three".