21233022229 has 2 divisors, whose sum is σ = 21233022230. Its totient is φ = 21233022228.

The previous prime is 21233022227. The next prime is 21233022259. The reversal of 21233022229 is 92222033212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14399520004 + 6833502225 = 119998^2 + 82665^2 .

It is a cyclic number.

It is not a de Polignac number, because 21233022229 - 2¹ = 21233022227 is a prime.

Together with 21233022227, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 21233022197 and 21233022206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21233022227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616511114 + 10616511115.

It is an arithmetic number, because the mean of its divisors is an integer number (10616511115).

Almost surely, 2^21233022229 is an apocalyptic number.

It is an amenable number.

21233022229 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233022229 is an equidigital number, since it uses as much as digits as its factorization.

21233022229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 21233022229 in words is "twenty-one billion, two hundred thirty-three million, twenty-two thousand, two hundred twenty-nine".