21422344411 has 16 divisors (see below), whose sum is σ = 23340441600. Its totient is φ = 19543062528.

The previous prime is 21422344393. The next prime is 21422344423. The reversal of 21422344411 is 11444322412.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21422344411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21422344411.

It is not an unprimeable number, because it can be changed into a prime (21422344711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4182310 + ... + 4187428.

It is an arithmetic number, because the mean of its divisors is an integer number (1458777600).

Almost surely, 2^21422344411 is an apocalyptic number.

21422344411 is a deficient number, since it is larger than the sum of its proper divisors (1918097189).

21422344411 is a wasteful number, since it uses less digits than its factorization.

21422344411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8838.

The product of its digits is 6144, while the sum is 28.

Adding to 21422344411 its reverse (11444322412), we get a palindrome (32866666823).

The spelling of 21422344411 in words is "twenty-one billion, four hundred twenty-two million, three hundred forty-four thousand, four hundred eleven".