21022331347 has 2 divisors, whose sum is σ = 21022331348. Its totient is φ = 21022331346.

The previous prime is 21022331311. The next prime is 21022331389. The reversal of 21022331347 is 74313322012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21022331347 - 2⁷ = 21022331219 is a prime.

It is not a weakly prime, because it can be changed into another prime (21022331047) 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, 10511165673 + 10511165674.

It is an arithmetic number, because the mean of its divisors is an integer number (10511165674).

Almost surely, 2^21022331347 is an apocalyptic number.

21022331347 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022331347 is an equidigital number, since it uses as much as digits as its factorization.

21022331347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 21022331347 its reverse (74313322012), we get a palindrome (95335653359).

The spelling of 21022331347 in words is "twenty-one billion, twenty-two million, three hundred thirty-one thousand, three hundred forty-seven".