21223202323 has 2 divisors, whose sum is σ = 21223202324. Its totient is φ = 21223202322.

The previous prime is 21223202291. The next prime is 21223202333. The reversal of 21223202323 is 32320232212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21223202323 - 2⁵ = 21223202291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21223202294 and 21223202303.

It is not a weakly prime, because it can be changed into another prime (21223202333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611601161 + 10611601162.

It is an arithmetic number, because the mean of its divisors is an integer number (10611601162).

Almost surely, 2^21223202323 is an apocalyptic number.

21223202323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223202323 is an equidigital number, since it uses as much as digits as its factorization.

21223202323 is an evil number, because the sum of its binary digits is even.

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

Adding to 21223202323 its reverse (32320232212), we get a palindrome (53543434535).

The spelling of 21223202323 in words is "twenty-one billion, two hundred twenty-three million, two hundred two thousand, three hundred twenty-three".