21322236105 has 24 divisors (see below), whose sum is σ = 37297620360. Its totient is φ = 11267527680.

The previous prime is 21322236049. The next prime is 21322236127. The reversal of 21322236105 is 50163222312.

It is a happy number.

21322236105 is a `hidden beast` number, since 2 + 1 + 3 + 22 + 23 + 610 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2627690121 + 18694545984 = 51261^2 + 136728^2 .

It is not a de Polignac number, because 21322236105 - 2⁶ = 21322236041 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2168616 + ... + 2178425.

It is an arithmetic number, because the mean of its divisors is an integer number (1554067515).

Almost surely, 2^21322236105 is an apocalyptic number.

It is an amenable number.

21322236105 is a deficient number, since it is larger than the sum of its proper divisors (15975384255).

21322236105 is a wasteful number, since it uses less digits than its factorization.

21322236105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347161 (or 4347158 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 21322236105 its reverse (50163222312), we get a palindrome (71485458417).

The spelling of 21322236105 in words is "twenty-one billion, three hundred twenty-two million, two hundred thirty-six thousand, one hundred five".