21433211323 has 2 divisors, whose sum is σ = 21433211324. Its totient is φ = 21433211322.

The previous prime is 21433211251. The next prime is 21433211333. The reversal of 21433211323 is 32311233412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21433211323 - 2²¹ = 21431114171 is a prime.

It is not a weakly prime, because it can be changed into another prime (21433211333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10716605661 + 10716605662.

It is an arithmetic number, because the mean of its divisors is an integer number (10716605662).

Almost surely, 2^21433211323 is an apocalyptic number.

21433211323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21433211323 is an equidigital number, since it uses as much as digits as its factorization.

21433211323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 25.

Adding to 21433211323 its reverse (32311233412), we get a palindrome (53744444735).

The spelling of 21433211323 in words is "twenty-one billion, four hundred thirty-three million, two hundred eleven thousand, three hundred twenty-three".