23433315422021 has 2 divisors, whose sum is σ = 23433315422022. Its totient is φ = 23433315422020.

The previous prime is 23433315422009. The next prime is 23433315422047. The reversal of 23433315422021 is 12022451333432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11760064197025 + 11673251224996 = 3429295^2 + 3416614^2 .

It is a cyclic number.

It is not a de Polignac number, because 23433315422021 - 2²² = 23433311227717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23433315422921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11716657711010 + 11716657711011.

It is an arithmetic number, because the mean of its divisors is an integer number (11716657711011).

Almost surely, 2^{23433315422021} is an apocalyptic number.

It is an amenable number.

23433315422021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23433315422021 is an equidigital number, since it uses as much as digits as its factorization.

23433315422021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 23433315422021 its reverse (12022451333432), we get a palindrome (35455766755453).

The spelling of 23433315422021 in words is "twenty-three trillion, four hundred thirty-three billion, three hundred fifteen million, four hundred twenty-two thousand, twenty-one".