21220230123233 has 2 divisors, whose sum is σ = 21220230123234. Its totient is φ = 21220230123232.

The previous prime is 21220230123217. The next prime is 21220230123251. The reversal of 21220230123233 is 33232103202212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20428302773824 + 791927349409 = 4519768^2 + 889903^2 .

It is a cyclic number.

It is not a de Polignac number, because 21220230123233 - 2⁴ = 21220230123217 is a prime.

It is not a weakly prime, because it can be changed into another prime (21220230153233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610115061616 + 10610115061617.

It is an arithmetic number, because the mean of its divisors is an integer number (10610115061617).

Almost surely, 2^{21220230123233} is an apocalyptic number.

It is an amenable number.

21220230123233 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220230123233 is an equidigital number, since it uses as much as digits as its factorization.

21220230123233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21220230123233 its reverse (33232103202212), we get a palindrome (54452333325445).

The spelling of 21220230123233 in words is "twenty-one trillion, two hundred twenty billion, two hundred thirty million, one hundred twenty-three thousand, two hundred thirty-three".